Countdown to Danger

Countdown to Danger is a 1967 British children's adventure film directed and written by Peter Seabourne and starring David Macalister, Paul Martin, Angela Lee and Penny Spencer.

While on holiday in the Channel Islands, young Tony falls into a cave through the roof of an old store of German wartime mines and accidentally activates one of them, which starts its countdown, ticking towards detonation.

Knowing he is trapped, his friends Sue, Mike and Sandie enlist the help of Bomb Disposal Officer Captain Wright, also on holiday on the islands.

After setting the scene with some brief instruction on the mechanism of mines, the film develops into a simple exercise in tension, dramatic enough to keep most children on the edge of their seats.

The dangerous situation that the lad Tony gets into is quite plausible and the subsequent rescue operations (with the mine ticking away ominously) mount a sufficiently holding degree of tension.