Diederich...
Diederich...
Millie?
Those personnel reassignments we
just got - how were they encrypted?
The last batch? Ultra. Why?
Spill the beans, Susan.
What's going on?
Why aren't you girls working?
Sorry, Miss McBrian,
but there's a German Oberleutnant
whose orders were part
of the Ultra intercept
and Susan thinks it's important.
Don't you, Susan?
Well?
I've seen him before. He's skipping
about all over the place.
Maybe he's h*tler's nephew
on a sightseeing tour.
Why use Ultra encryption
on personnel reassignments?
Go on.
Lucy, he's
Oberleutnant Dieter von Diederich.
Any other assignments?
Oberleutnant von Diederich,
7th January, reassignment.
Berlin Central to 25th infantry
division, effective immediately.
Oberleutnant von Diederich,
12th March, reassignment,
Clausewitz, effective immediately.
Oberleutnant von Diederich, 24th
March, battalion transfer order,
702nd Static Infantry Division,
effective immediately.
Oberleutnant von Diederich,
3rd May, reassignment -
All right. h*tler's nephew
doesn't get around that much.
Transferred to Clausewitz.
Where is that?
Nowhere. There are no German towns
called Clausewitz.
Maybe it's a person, not a place.
It's also a t*nk division.
He was transferred from infantry
to tanks and back again,
which is as daft as someone leading
the show jumping
because they're good at hockey.
So who is he?
I don't think he exists.
I think he's a code
within the cipher.
Code for battle orders, you mean?
Perhaps.
Take it to the house.
But I don't think -
You do think it's real, don't you?
You don't think it's a coincidence?
Oh, yes, I...
Well, off you go, then.
You've been ages! What happened?
We had a bet you'd been
court-martialled and sh*t.
Well? We were right.
It is a troop deployment code.
The battalion numbers indicate
different geographical zones
and Diederich is the order to deploy.
So now we know where the German
army's going to be in three days.
My cousin's in North Africa.
This could...
Yes. It'll make a difference.
Well done all of you, I'm sure.
Now, get back to your digs,
get some sleep.
Shift starts in seven hours.
Good night.
You know the map they have
up at the house? Hmm.
With the markers for the armies?
All those troops are on the move now
because of us.
Not bad for a few ordinary girls
in a tin hut.
Why are you laughing?
"Ordinary girls". You couldn't be
ordinary if you tried.
When this is over,
won't we have to be ordinary?
I won't let you.
Now, shut up and go to sleep.
Mummy! We're home!
And then Mummy says, "It's time for
lunch, everyone. Come inside".
Lunch at school was horrible.
Gosh, I'm sure it wasn't that bad.
It was spam fritters and tapioca.
Snotty gobbles.
Eurgh!
I am going to have a lie down.
I've also got a sandwich
if you'd like it.
Oh, yes, please,
and I'd like a chunk of cheese.
'This is BBC
Home Service News at four o'clock
and this is Alvar Lidell reading it.
Police have found the body
of a fourth woman
on wasteground
in North East London.
The woman,
who has not yet been named,
was discovered near Warwick Green
and appears to be another victim
of the k*ller of Jane Hart,
Patricia Harris and Sophie Trent.
A spokesman for Scotland Yard
said that there were many
similarities in the cases
and that they were extending
their manhunt throughout the city. '
Warwick Green? That can't be right.
Mummy? Can we go and play outside?
Yes, of course you can.
Stay near the house, though.
Missed one.
Can we leave the table, please?
Yes, of course you can.
How was work?
Gruelling. Stephens is reorganising
the department,
so everyone's on their best
behaviour.
A lot of fuss and bother
over nothing much.
Darling...
you know the Deputy Commissioner,
don't you?
Wainwright?
Hmm.
Hmm, I served with him
in the Royal a*tillery.
I don't "know" him exactly.
Erm... why?
It's a funny thing, really.
You know I'm good with puzzles and
brain-teasers, that sort of thing?
I know you're the very devil
with the cryptic crossword.
And you know that these poor girls
they've found?
Oh, sweetheart,
why on earth are you thinking
about all that horrible stuff?
Oh, I don't know.
I do know, really.
The first girl Jane Hart,
she was a shopgirl in Soames.
Right. You remember her? She must
have served me a dozen times.
She was there and now she's gone.
I can't help thinking
there but for the grace of God -
Ah... Susan. Don't be silly.
Look.
These girls... from what the papers
say, they...
they weren't our type, not at all.
Out on their own at night. But
I couldn't help thinking about her.
Now I think there might be something
the police aren't seeing.
I think there might be a fifth girl
but they haven't found her yet
because they don't know
she's missing.
You know I'm good with patterns.
You really think that just
by listening to the wireless,
you can tell the police
where to look for a m*rder victim?
Oh, yes.
Timothy.
Sir.
How are you? Good to see you.
Nice to see you too.
Erm... this is my wife.
Pleased to meet you.
Come.
Do come in.
Now, er... Timothy says you may
be able to help us.
Well, I hope so.
Er... may I?
Of course.
Er... your first girl was found here,
Jane Hart,
in an Anderson shelter
behind a disused terrace. Yes.
Patricia Harris was found here,
also Anderson shelter,
this time on waste ground.
Er... Sophie Trent here, this time in
a cellar of a disused building. Yes.
Now, your fourth girl - I'm afraid
we can't release her name yet.
It doesn't matter. Warwick Green.
She'd made a journey that day,
hadn't she?
Well, she wasn't taken from her
house, Mrs Gray, so yes.
None of them were found
near their homes.
So the man you're looking for
doesn't go searching these women out.
He waits for them to come to him.
That means the locations where
they're found describe a pattern
that's defined by the k*ller,
not the victims.
I'm not sure I follow.
I think we've probably taken enough
of your time.
I really should be getting to work.
Yes, of course, Timothy,
won't keep you.
Perhaps the Inspector
has a few more minutes,
just to go over the rest
of the pattern?
Darling - No, no. I'm sure I can
spare another ten minutes.
Oh, well, that's...
That's very good of you.
Erm... I hope it turns out
to be useful.
It's er... good to see you looking
so well, Timothy.
Thank you, sir.
So... a pattern, eh?
Yes.
What sort of a pattern?
Erm...
Imagine you're deploying
merchant vessels
to take supplies outbound from Dover.
Let's say these are your ships.
Now, you hear a mayday signal
from...
these... three.
That should tell you two things.
Well, it tells me I've got
a U-boat under my desk.
Yes.
And it tells me that this vessel...
was either very lucky indeed
or it went down
without a mayday call.
Yes! But no-one's going to know for
sure unless they go and check. I see.
I- I think you have a gap in your list
of m*rder victims.
Someone who, as it were,
went down without managing
to make a distress call.
That would even out the time
difference between victims.
Exactly.
Timothy says you worked for the
Foreign Office during the w*r.
Yes. Clerical work.
Mrs Gray, I'm not going to ask you
to breach the Official Secrets Act
right here in Scotland Yard,
but, er...
it wasn't clerical work, was it?
And your husband doesn't know?
This girl you think we've missed.
How do we find her? You look at the
other variable - location.
So - excuse me, sorry...
It's not a straight line like the
U- boat
but let's say it's a spiral,
he's circling out from somewhere.
So we track back and we look for the
centre, which would be here, in Soho.
That suggests the gap you're looking
for would be somewhere around here.
Why would he be leaving a pattern
for us to follow?
He doesn't realise he's doing it.
People make patterns all the time
but don't notice.
I'm sure you walk to work on one side
of the street
and walk home on the other. Perhaps
you think it's faster that way.
He's doing exactly the same thing.
He's trying to cover his tracks
by moving around,
but in fact, he's making the pattern
clearer and clearer,
if you know how to look for it.
Right. Thank you.
Those hedges and down through
those railway tunnels.
Jamie, onto the ridge
and all this stuff here.
Here you go.
Thank you.
Anything?
Nothing, Sarge.
Boys?
Let's do it again.
Check up there. All the way along.
They telephoned
and said you were still here.
Yes, sorry it's taking so long.
They're looking for the body,
you see.
Right.
The children are with Mrs Johnson.
So...
.. they think there might be
something in it?
Mmm.
Sarge!
Got something here.
Bloody hell, Barry.
I know.
All right, lads, that's enough.
Sarge! I found it!
Sorry, Barry. This is evidence.
All right, boys,
that's it for today.
I'm sorry, Mrs Gray.
My men searched the area.
There's nothing there,
nothing at all.
You're sure? I mean, I -
We're quite certain.
I'll show you out.
I feel awful for wasting your time.
Oh, not at all.
Take care.
Bye.
The pattern is there. Maybe I was
wrong about it being a spiral,
maybe it's more like concentric
circles and he's moving - Oh, Susan.
I'm just saying -
Stop it!
Look, I tried. WE tried.
Yes!
Look, I...
You know they're reorganising
the department.
Well, transport's coming up
in the world
and I may very well see my way clear
to a promotion.
It's just...
Anyone can make a mistake, Susan.
But let's just leave it at that,
shall we?
Yes.
Of course.
I'll buy you a new book of puzzles.
I'll buy you the hardest puzzles
I can find.
Ow!
Coming.
Who is it?
It's Susan.
Susan who?
Hello.
Bloody hell.
Thanks, Frank.
All right, darling.
You stopped sending the postcards.
What was the point?
You weren't coming.
The last one was from Africa.
Where else did you go?
All the places we talked about.
Was it how we thought?
A big adventure, you mean?
Mmm.
Yes. Yes, it was.
Until the money ran out.
It wasn't such an adventure
after that.
So what's his name?
Timothy.
He works for the
Department of Transport.
He's nice, actually. You'd like him.
We think he might get a promotion.
So you met Timothy
and you fell pregnant.
There you go.
Your own big adventure.
Yes, we have a girl and a boy.
Claire and Sam. You?
No! No...
That must keep you busy.
Yes, it does, rather.
Balancing books,
making the meat last the week,
keeping the house clean...
.. cooking -
Why are you here, Susan?
So they looked and they didn't find
anything. No.
I bet you felt like a fool.
All right,
but we're gonna need help.
Why? I thought if it's just something
I'm missing,
then you and I could
look at the pattern -
Oh, Susan, if this pattern of yours
was easy to find,
you'd have found it by now.
Suppose you're right and this man
is leaving some sort of a trail,
then this is going to come down to
geography and data.
So... you're good with patterns, I'm
all right with maps, that's a start.
But there's going to be
a ton of data
and how are you going to know
what's relevant and what isn't?
You need someone who can remember
it all. And that means Lucy.
And you know what else?
You have to get that data
in the first place.
Records, documents, files, probably
restricted files at that.
Jean?!
Dear, you've picked up four copies
of the same book.
It's not going to make it
four times better, you know.
Susan Havers?
Isn't this a coincidence?
Or maybe not.
Hello, Jean.
About time too,
I've been waiting half a day.
What?
Some ladies for you. If it's the WI,
you can tell them to piss off
and stick their nose
into someone else's cake sale.
Oh, my goodness!
It's been years!
How are you, Lucy?
I'm well - I'm really well.
I can't believe this.
We need your help, actually.
My help? With what?
Phil and lit club, is it?
You all read the same book
and chat about it?
More or less.
We used to do it in the w*r,
so when Susan and I bumped into one
another, we thought, "Why not?"
I'll bet the moment I'm out the
door, Dickens doesn't get a look-in
and you'll spend the morning
gossiping about old times.
He may be on to us, Susan.
Off with you now, dear.
Yes, yes.
It's good to see you smiling.
You should have done something
like this earlier.
You're right.
Bye.
I remember A Christmas Carol
on the wireless,
but I don't think I've read
this one.
I don't think we're actually here
to read the book, Lucy.
Are we?
Mummy, we're home.
Perhaps he'll leave a clue
or make a mistake
but how many more girls will die
before the police catch him?
We can do better.
He's making a pattern, he doesn't
even realise he's doing it.
If we can cr*ck it, we'll be able
to see what his next move will be.
Just like knowing where the German
army will be in three days' time.
If we get ahead of him, we can stop
him before he kills again.
How, exactly?
Well, just like we used to.
Treat the killings like a code;
keep at it till we break it.
If Susan's right, perhaps we are
the only people to find his pattern.
I know you feel strongly about this,
girls,
but it's really not our place.
And what if we do find it?
We take it to the police?
No, I tried that.
Then what's the point?
Well, perhaps we can do more.
What do you mean?
Perhaps we could... find him.
What?
Isn't that dangerous?
I'm sorry, Susan, but I'll say it
again. This is not our place.
Well, perhaps this isn't our place
either, Jean!
Sitting around in our cosy front
rooms while the police do nothing!
We could be useful again.
What do you mean, "useful again"?
Are you saying we're not useful now?
Oh, come on, Jean! We used to make
a difference, every day.
We saved lives, we fought!
I mean, not like the men, obviously,
but we did our bit.
That was the w*r. This is different.
We're still the same, aren't we?
So says the housewife
with two children
and a husband up for a promotion.
Don't be so silly.
If we're so silly,
why do you need us?
Well...
It's been lovely seeing you all.
Please, Jean - I'm sorry,
but I really do have to be going.
No, you don't understand.
It looks random, but it isn't.
He's working to a timetable.
Any day now, he'll take
some other poor girl.
Best leave it to the police.
Lucy...
Some girl is going to die
because you won't bloody listen!
Aren't you staying? Look, I'll come
and see you next week, I promise.
This is lovely.
Better than a restaurant.
Well, you deserve it, darling.
Congratulations.
To the new head of...
The new supervisor of vehicle
licensing and his lovely wife.
Well done.
Mmm.
Mmm.
Oh, I forgot to ask about your club.
Did you actually manage
any phil and lit?
Oh, no, you were right.
It was mostly just gossip.
I knew as much.
Darling?
Mmm?
Do you like your job?
Well, it's a good job.
I suppose it's not all that
exciting, but... it's important.
And I think perhaps
I've had my fair share of excitement
for one lifetime.
Hmm.
Morning.
Good morning, Sarah.
No, that's it for
today, actually, thanks.
Have a nice day.
See you soon.
Anything else, madam?
No.
You were right.
We didn't listen and now
another girl's gone missing.
God willing that she's still alive
and can be found in time.
Yes, but I was wrong. I'm an amateur.
I saw a connection that wasn't there
and convinced myself
it meant something.
Because you've been working from
newspaper and wireless reports.
But they're only repeating
what the police tell them
and they won't tell them
everything.
Why wouldn't they
tell them everything?
Because some of it
will be too dull.
But the dull details are often
the vital ones.
And some of it's going to be
too awful.
Indeed. We need to find out exactly
what happened to those girls.
Thank you for this.
Let's go before Dorothy
changes her mind.
So... there we have it.
All the information.
What does 'post-mortem penetration'
mean?
It means they weren't r*ped
and then m*rder*d.
They were m*rder*d and then r*ped.
All of them?
We don't have Jane Hart's file,
because they did the autopsy at
St Anne's, but these three, yes.
Why were all the others taken
to the Royal General?
I suppose by then,
they knew they were connected.
But Jane Hart was the first.
Mmm.
Well, we really need to see
that file too, Jean.
Getting across town at rush hour
will take a while.
Use the Goblin.
Sorry, dear?
Gospel Oak and Barking Line.
You'll have to hurry,
the trains only go at twenty past.
Wait. Hold on a minute.
They were all making journeys.
They were all going somewhere
or coming back.
Yes. What does that mean?
I said it myself. He's working to a
timetable. He's working to a pattern.
So were they.
The railways.
That's how he's finding them.
What's this?
I'm going to go see my mum.
What's wrong with her this time?
There's casserole in the oven.
That's something, I suppose.
I can do a double shift
at the weekend to make up,
but I just can't do today.
It's just one shift. Please.
Well, I'm sure we can work
something out.
I mean, I do something for you
and, er...
you can do something for me.
Never mind.
You think you can find another
job that easy, do ya?
There's an awful lot of girls
out there, darling,
and not enough jobs to go round.
Perhaps, "darling", but none will
be desperate enough for a job
to want to screw you.
They all made train journeys.
Not the same journey -
not even the same line.
I thought they must all be passing
through his area. But that's not it.
He is on a train too.
A train compartment. It's perfect.
It's private.
A man can talk to a woman
and it's not unseemly.
All right, he talks to them. But how
does he get them off the train
and back to wherever it is he takes
them?
He can't just cart them off,
screaming through the rush-hour.
They'd have to trust him
and go willingly.
But why on earth would they do that?
Have you got it all, Lucy?
Everything memorised? Mm-hm.
All right. How many points
of connection are there
between the routes the different
girls took? 46.
Gosh, he's not taking 46 trains,
he's taking one.
Millie? Lipstick.
Lucy, can you mark them up?
Each journey, please.
Now, we're not looking at the lines.
We're looking at where they cross.
What they intersect with.
Because that's where he is.
He's in the gaps.
Susan, it doesn't work. It can't.
You've got three sets
of overland train routes here,
and all right,
they connect to each other.
But Emily Dixon didn't take
an overland train.
She took the tube from
Clapham Common to Turnpike Lane.
What was her route? Er... Clapham
Common, Northern line to St Pancras,
change to Piccadilly line,
through to Turnpike Lane.
No connection at all.
It has to connect.
We're missing something.
Lucy, she disappeared on the first.
Anything? First of May, Northern
line, no faults or delays reported.
First of May, Piccadilly line...
Lucy?
Er...
They closed it.
Here. There was a points failure
the day Emily disappeared.
They closed the line for two hours.
So she arrives at St Pancras,
goes to take the Piccadilly line
but can't because it's shut.
So what does she do?
She comes up to the surface.
At St Pancras Station.
And he's right there.
Waiting for her?
No.
Waiting for his train.
She would have been there at...
six o'clock.
We've got 46 points of connection
between the girls' routes.
But how many are left
if they all have to connect
to St Pancras station around
six o'clock on the first of May?
None of these.
Not this one.
Not that one either.
There it is.
That's it. There's only one.
The 6:15 slow train
from St Pancras to Barking.
It's five o'clock. Claire and Sam
can have tea next door.
Timothy's not due home till seven.
Why don't we go and see
for ourselves?
'The train on
platform five is about to depart. '
Why do men do it?
What?
k*ll women.
Women k*ll too, you know.
Not like this. Only men do this.
He takes the 6:15 slow train.
Lots of people getting on and off
as they travel different routes
on other lines.
Lots of chances to meet someone.
Follow them if he wants to.
Maybe change trains if he needs to.
So he meets her, he talks to her.
Why does she trust him?
He's someone important, respectable,
a businessman.
He's wearing a suit.
Would you go off with a businessman
you'd just met? No!
Maybe he threatens her.
Maybe he has a Kn*fe.
Look at all these people.
Someone would see.
One of the girls
would have shouted out.
Nobody saw anything.
He's invisible.
Here we are.
Oh, sorry it's such a tip.
It's lovely. Don't worry.
Er... right.
First things first,
we need to find Mary Lawrence.
All right. If the k*ller is a
railway guard or a ticket inspector,
then his schedule connected
to her journey somewhere.
Not just Mary Lawrence,
all the girls.
Every time he takes a victim,
he makes the pattern clearer.
We need the points of connection
for all the shifts, all the routes
and keep the 6:15 slow train
as a constant.
Do you need to get to work?
Not tonight.
Well, I've got one. Millie?
Just one. Upton Park.
Upton Park.
So where is she now?
b*mb sites, ruins, rubble.
We need to go and look for her.
How much longer are we going
to keep doing this?
Look for doors, cellars,
anything underground.
Dear, we are, there's nothing here
and I've laddered my stockings.
Jean?
What was this place?
Oh, dear Christ...
Mary Lawrence.
God have mercy.
Lucy, are you seeing this?
I don't want to.
Please.
We have to remember all this.
You got it?
Please can we leave?
Lucy, are you all right?
She's dead!
We were too... We were too late.
Oh, sweetheart, we were always
going to be too late.
Then what was the point?
Why did we have to come here
and see her like that
if we couldn't even help her?
What was the point of it? Lucy...
She's just like us. She's just like
us and he k*lled her...
Lucy, I'm so sorry.
I didn't think it would be so -
What did you think it would be like,
Susan?
Did you see the cigarette butts
on the floor in there?
What does it matter?
It matters because it means he took
his time in there!
It matters because it's so casual!
He's not worried. He's not afraid.
He knows bloody well
he'll get away with it.
So when he's finished, he stops
for a smoke, for God's sake.
So what do we do now?
Call the police, leave it at that?
Forget it, go home,
pretend it never happened?
I can't do that. Not anymore.
No, neither can I.
You were right.
They're never going to find him.
No.
We are.
Angela, when I was at
Special Operations Executive,
there were rumours.
What kind of rumours?
Maybe he makes it look
like others did it,
placing false evidence at the crime
scenes, pointing to someone else.
You need to understand the
psychology of your target.
What drives him, what makes him
tick. Try and get inside his head.
They go with him because
he has something they want.
What if we give him
what he's looking for?
We made an arrest this afternoon.
What? I must say, it's thanks to you.
She's not here! Well, what do I do?
Call the police now!
Lucy!