Feature-length episode. Leo visits old college friend Sean Delaney at his psychiatric care centre in Essex, where one of the patients has been found dead in her bed. Although the coroner ruled a verdict of sudden-death syndrome, Delaney is not convinced and asks Leo to investigate. Suspicion soon falls on the dead girl's father, who has lost the family fortune, and his wife - but the pathologist runs into problems when the local detective sergeant makes it clear she is suspicious of his motives. Adrian Dunbar, Tamzin Outhwaite and Tom Ellis guest star