When a stranger runs his car into a ditch in dense fog in South Wales and
makes his way to an isolated house, he discovers a woman standing over the
dead body of her wheelchair-bound husband, gun in her hand. She admits to
murder, and the unexpected guest offers to help her concoct a cover story. But
is it possible that she did not commit the murder after all? The house seems
full of possible suspects. As the police investigate, they discover a pandora's
box of loves and hates, suspicions and intrigues.