Smokescreen (1964)

A modest, but quietly effective story of an insurance assessor (the ever reliable Peter Vaughn) investigating a possibly suspicious claim following the plunging of a car over a Brighton clifftop. Vaughn is first class as the dogged, brolly-carrying Roper, on screen virtually throughout, as he questions everything and trusts no-one. It has the feel of a police procedural, and there is some wry humour derived from his reluctance to spend money, and to fiddle his expenses at every opportunity, for the best of reasons, we discover. A stalwart supporting cast keep things real, and there are nice location shots. Worth an hour of anyone's time.