British crime drama starring Griffith Jones, Ursula Howells and Honor Blackman. When the body of a wealthy woman, identified as Lucille Ainsworth (Howells), is discovered in Hampstead Heath it appears there are many possible motives and suspects for her murder and it's the job of Detective Inspector Marshall (Ewen Solon) to solve the mystery. Her husband, banker Robert Ainsworth (Jones), had suspected her of being unfaithful and had begun to follow her, placing him firmly in Marshall's sights and making him compelled to prove his innocence.

Terence Young directs this 1950s espionage thriller starring John McCallum, Nadia Gray, Jack Warner and Christopher Lee. When the Swedish scientist Dr. Nils Ahlen (McCallum) discovers a means of transmuting sound impulses into electrical currents, his invention inevitably becomes the sought after tool of governments, businesses and criminals everywhere. When his wife Helga (Mary Laura Wood) and key parts of his invention go missing, Ahlen enlists Inspector Peterson (Warner) of the local police to help him track them down. The quest leads them to snowy northern terrain where a showdown with the abductors beckons...