You're a retired spy living on a pension in a quiet town in the south of England.

Well, you're not really your everyday run of the mill spy.

You're actually a one-time double agent, a Russian military intelligence officer who

passed secrets to the British and then gets caught by the Russians.

You're convicted of espionage in a Russian courtroom and you get thrown in jail, only

to be released in a spy swap straight out of a Cold War saga.

That was eight years ago and it seemed your cloak and dagger life was long behind you.

Then one Sunday afternoon you go for a leisurely walk by your house, down a covered alleyway

past the bubbling stream and not long after, you and your daughter are found slumped on

a park bench in a catatonic state.

And within a few days, the police discover you are poisoned by a nerve agent.

What happened to the ex-Russian spy Sergei Skripal?

And why?

We'll talk to one of the US government's foremost experts on the subject, the former CIA spy

in Russia who arranged the spy swap that freed Skripal on this week's episode of Skolduggery.

There is absolutely no collusion.

I didn't make a phone call to Russia.

I have nothing to do with Russia.

Everybody knows it.

Because people have got to know whether or not their president's a crook.

Well, I'm not a crook.

I told the American people I did not trade arms for hostages.

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