I don’t know who killed him, but I do know the police didn’t look hard enough at why someone might have wanted to.

BILL SERAFINI

They didn’t do enough on the victimology?

MITCHELL CLARKE

I doubt the Met even knew what that word meant back then.

LAILA FURNESS

I’m not sure that’s fair—

JJ NORTON

(to Mitch)

Just so I’m clear – you think the perp is some as-yet-unknown third party? i.e., not Caroline, and not Rupert Howard? We’re looking for the King’s Cross Killer?

MITCHELL CLARKE

Almost certainly, yes. In my opinion.

LAILA FURNESS

(sceptically)

Really? Caroline was by far the most obvious suspect.

JJ NORTON

But there was never enough evidence to charge her, was there? Let alone convict. I’m not necessarily disagreeing with you, Laila, I’m just saying that Mitch could be right about the motive – that there was something going on in Luke’s life the police never found.

LAILA FURNESS

I just think we have to eliminate Caroline – and, indeed, Rupert – before we go careering about looking for some mysterious ‘UnSub’ the police never identified at the time and will be even harder to track down now.

ALAN CANNING

My thoughts entirely.

BILL SERAFINI

Laila’s right. That has to be where we go next.

(looking round the table)

Agreed?

(general nodding and murmurs of assent)

So, let’s start with Caroline.

JJ – perhaps you could recap what we know?

JJ NORTON

With pleasure.