When the body of a man dressed in a pinstriped suit is discovered by war photographer, Eva Paisley, in a secluded bay on Portland Island, Dorset, Inspector Alun Ryga of Scotland Yard is sent to investigate. Recently promoted, the thoughtful, observant Ryga, is on his first solo investigation outside of London, and is keen to prove his worth. Ignoring the warnings of the local police inspector, and the Dorset Chief Constable, that his trust in Eva Paisley is misjudged, Ryga quickly realises that her observations could provide the breakthrough he needs in a complex murder investigation and the answer to the haunting circumstances that have sent the man in the pinstriped suit to his death.