Exclusive: “The cat and mouse dynamic is really good,” says Jason Watkins. “It’s a game where these two men are almost stalking each other,” adds Robson Green.

The pair are talking about the central dynamic in Catch You Later, the Channel 5 miniseries in which The Crown star Watkins plays a retired police officer, Huw Miller, who is plagued by the one case he failed to crack — stalker who taunted his town, toying with his victims before killing them. When Patrick Harbottle (Green) moves into a home on his street recently left empty when the occupier suddenly dies, Miller becomes convinced his new neighbor is the killer, thanks to three little words.

“The way Patrick says, ‘catch you later’ triggers something within Huw, who thinks he has his man,” says Green, star of shows such as Grantchester and Strike Back. “Patrick is over-friendly, and Huw feels everything is not quite what it seems.