 When Sonny's superior, Sam Lomax (Lizzie Roper), is demoted to Detective Sergeant and is later killed in a car accident with her husband Danny Lomax (Stephen Billington), Sonny is promoted to Detective Inspector and leads the case into the deaths of Sam and Danny.It is revealed that Sonny is a bent copper and that he is working on both sides of the law, being paid by Grace Black (Tamara Wall) to set Big Bob (Vincent Ebrahim) up on a false charge.When Theresa's mother, Kathleen McQueen (Alison Burrows), returns to the village to help get Theresa released from prison, Sonny threatens her.