A military plane ditches into the sea whilst carrying three nuclear weapons on board. While the RAF mounts a search mission, an unidentified object is washed up on the shore near Byfield pier on the south coast of England. It is found by two men, Geoff Harker and Sam Billings, who decide that it must be a weather detecting device, and so begin to strip it down for parts. Toby is sent to investigate the device, but he soon finds himself faced with the terrifying prospect of disarming a very live bomb.
Did You Know?
This episode was wiped by the BBC at some point before the corporation audited its archives in 1978. There is currently no known copy of this edition in existence, although around three and a half minutes of the closing sequence is preserved at the start of the following installment. See more
Dr. Spencer Quist
[Quist advises Wren, who is attempting to defuse a one megaton hydrogen bomb
Toby - listen. If I'm right, and I don't know this particular weapon remember - we have twenty-five minutes, plus or minus. Then... we're due for either a conventional explosion or the full nuclear holocaust.