Mar 13, 2021 ITV will screen bestselling author and Jersey resident Peter James’s first television adaptation of the Roy Grace detective series tomorrow at 8 pm. Peter James. Picture: ROB CURRIE. (30414899) Dead Simple, the first episode of the new Grace series, stars John Simm as Superintendent Grace and Richie Campbell as his sidekick, DS Glen Branson. Mr James, who moved to Jersey three years ago with his wife, Lara, said that he had turned away a number of approaches to screen his fictional detective before agreeing on the current collaboration with Russell Lewis, whose screen credits include Inspector Morse, its prequel, Endeavour, and its sequel, Lewis, as well as Spooks and The Bill.