EXCLUSIVE:The cat and mouse dynamic is really good, saysJason Watkins.

Its a game where these two men are almost stalking each other, addsRobson Green.

Patrick is over-friendly, and Huw feels everything is not quite what it seems.

Catch You Later' stars Robson Green and Jason Watkins

Psychological drama ‘Catch You Later’ stars Robson Green and Jason WatkinsUnai Mateo / Clapperboard Studios SPV 5 Ltd / © Channel 5 Broadcasting Limited

For much of the four-part series, the audience is left in doubt about Harbottles innocence or otherwise.

Millers family suffers as he agonizes, with his wife played by Sunetra Sarker (Desperate Measures).

The audience will wonder what his motives are.

The cast of ‘S Line’ and director Jooyoung Ahn (third left)

Interestingly, its not the first time Green and Watkins have played adversaries on screen.

Good writing is about when youre putting incendiary elements together, he says.

In Huws case, that means retirement.

Hes had a good career as a copper, but there is unsolved business.

There is a failure, as he sees it, trying to capture this rather cruel person.

It has haunted him and we are catching him at that moment.

Sphere Abacus will be showcasing the series at itsLondon TV Screeningsevent on Tuesday, February 25.

Clapperboard is behind numerous series shot on relatively shoestring budgets that have both rated well locally and sold internationally.

They had fallen in love with the project and commissioned it from the treatment.

Thats unusual in the industry, but not at Channel 5.

They like to move fast.

Id like nothing more to film the shows where theyre set.

At this budget level, its about appetite for risk.

There is always a chance of overspending.

Weve been willing to take it because we have volume.

The U.S. retrenching from co-productions has further upset the equation.

It has been a real challenge to get the MGs weve needed.

Unexpected roles

Benson enjoyed casting Green against jot down.

They think he is going back to what he was, but he thinks it will bring him forwards.

Youre seeing a real family going through an extreme time.

And everyone loves a whodunnit.

To create that took hard work.

Sounds like he might, well, catch you later.