Sir Robert Boniface, the industrial and financial tycoon--and stalwart of the British Cabinet--has been found shot dead in his blue limousine on a warm Friday evening in the Vale of Health, Hampstead Heath. Nearby, a rejected portrait of Sir Robert is found riddled with bullets in the studio of the now-missing artist Matt Caldwell. Called to the scene, Inspector Beckett of Scotland Yard suspects murder. By the time Superintendent Mooney joins the...