DI Derek Spalding was a police officer who investigated the horse theft at Home Farm stables and the hit-and-run on Kathy Bates in September 1998. He arrested Steve Marchant for both the theft and hit-and-run in October, and Kim Marchant in November when Steve implicates her. DI Spalding later investigated the disappearance of Chris Tate in September 1999, and goes to arrest Liam Hammond. But Liam is fatally shot and DI Spalding begins investigating his murder, suspecting one of the Tates. The Tates say it was an accident. Spalding keeps a watchful eye on Liam's funeral, and after the funeral, he confronts Chris and his sister Zoe, wanting to know what really happened in the cellar. Spalding thinks Liam was another long lost relative with an axe to grind, hence why he thinks Zoe killed him. Chris says that he will never know. Spalding tells Zoe he hopes she lives with herself for what she did, before leaving. DI Spalding fails to get any evidence and therefore makes no arrests, allowing the murderer, Chris's sister Zoe, to get away scot-free.