Ruth Blacksmith prepares to divorce estranged husband Jason to marry the younger Aidan Harper,despite Aidan's confession that he once 'hurt a woman,who later died',named Mary Trelease. Unbeknown to Ruth Jason and Aidan had fought and now Jason is found murdered,his sister suspecting Aidan,who has no alibi.
Returning from a Swiss business trip, executive Mark Bretherick finds the dead bodies of his wife Geraldine and daughter in the bathtub. It looks like a *******, but there's no note or known motive. Country police chief Proust gives the case to recent London transferee, detective sergeant Charlie Zailer. Lacking confidence, she ignores the advice of veteran DC Simon Waterhouse,...