In Britain, a man with a shady past uses his antiquities shop as a front for smuggled diamonds but his young shop-assistant starts blackmailing him, leading to murder and to a police investigation.

Oskar Homolka
as Desius Heiss

Derek Farr
as Robert Graham

Muriel Pavlow
as Margaret Heiss

Manning Whiley
as Corder Morris

Diana Dors
as Mildred

Kathleen Harrison
as Mrs. Catt

Garry Marsh
as Major Elliot

Kenneth Griffith
as Archie Fellows

Jan Van Loewen
as Professor Vanetti

Johnnie Schofield
as Inspector Robson
CinemaSerf
Oscar Homolka is super in this crafty little crime noir. He portrays a reputable antiques dealer whose daughter "Margaret" (Muriel Pavlow) is a virtuoso violinist. Unbeknown to all, though, he also has another business fencing stolen jewellery with his friend Derek Farr. When his odious clark "Morri...