There's intrigue aplenty aboard the USS "Moray" when Navy submarine commander James Page (Hugh Marlowe) accuses seaman Robert Chapman (Jack Ging) of murdering a nightclub singer. Things get worse for Chapman when Cmdr. Page himself is killed. In his efforts to defend Chapman, Perry Mason (Raymond Burr) exposes evidence of a complicated blackmail scheme involving an electronics firm owned by the victim's father-in-law Anthony Beldon (Robert F. Simon). ~ Hal Erickson, Rovi