Sergeant Grimshawe wants to retire in the flush of success by winning the Star Squad prize with his very last platoon of newly called-up National Servicemen. But a motley bunch they turn out to be, and it's up to Grimshawe to put the no-hopers through their paces.
After murdering his lover, cross-channel swimmer Joy Webster, Derek Bond attempts to do same to her other boyfriend, Sheldon Lawrence. John Ireland plays an Interpol detective who stems Bond's homicidal hijinks. Black Tide was produced by Monty Berman in his pre-Saint days.