AllMovie

A man wearing dark glasses steals a valuable necklace from the showroom window of a jewelry store--then returns the item and walks away. It turns out that this is a mere "dress rehearsal" for an actual robbery planned by store employee Karl Addison (John Conte), who intends to use the fact that an upcoming operation will render him temporarily blind as his alibi. Alas, things go terribly wrong, and Addison is killed. Perry Mason (Raymond Burr) enters the scene when his client James Kincannon (Jack Ging) is charged with Addison's murder.