The Walmington-on-Sea platoon take action when a new High Explosive Attack Device goes haywire.
Starring Arthur Lowe as Captain Mainwaring, John Le Mesurier as Sergeant Wilson, Clive Dunn as Corporal Jones, John Laurie as Private Frazer, Ian Lavender as Private Pike, Arnold Ridley as Godfrey, Larry Martyn as Private Walker, John Barron as Colonel Pearce and Michael Knowles as Captain Stewart.
Adapted for radio from Jimmy Perry and David Croft's TV scripts by Harold Snoad and Michael Knowles.
Producer: John Dyas
First broadcast on BBC Radio 4 in April 1976.