Captain Mad Hoagy tackles a bomb, Twitten uses reverse psychology on Inspector Steine, and evil Mrs Vine meets her match.

Second World war Bomb disposal hero Captain 'Mad Hoagy' Hoagland, reassures a doubtful Sergeant Brunswick that he does indeed deserve his silver truncheon award for bravery, and saves the day at the bandstand presentation ceremony of this presentation when he defuses a ticking bomb in a box with the aid of his old army bomb disposal team member Terence Chambers; who discovers that criminal Adelaide Vine has arranged for the severed head of his old criminal fraternity friend Birthmark Potter to be placed in the ticking box so it will appear that Mrs Groynes is responsible for his murder.

Vine is led off by Chambers to meet her fate at his hands, and the Brighton police station team learn that Inspector Steine can be persuaded into all kinds of useful behaviour by the employment of reverse psychology; with hilarious results.