The sudden death of business magnate Jack Wright (Trevor Eve) shocks his family, but the real turmoil begins when his will disinherits his third wife Sally (Nikki Amuka-Bird) and sons Gray (John Simm) and John (Daniel Rigby). Detectives DCI Hector Morgan (Harry Lloyd) and DC Katie Jones (Liz Kingsman) suspect foul play, igniting a tense investigation into a family riddled with secrets and rivalries.