A post-operative ward in a hospital is held to ransom by a newly-released convict who plans to make a fortune, setting up his own foxhole at the top of a nearby building. CI5 hatch a plot to bring him down before he takes a fatal shot at the hospital.
| Name | Type | Role | |
|---|---|---|---|
| Brian Clemens | Writer | ||
| Lorrain Grey | Guest Star | ||
| Peter John | Guest Star | ||
| C.J. Allen | Guest Star | ||
| Roderic Leigh | Guest Star | ||
| Peggy Bullock | Guest Star | ||
| Sarah Kenyon | Guest Star | ||
| Jean Campbell-Dallas | Guest Star | ||
| Alan Polonsky | Guest Star | ||
| Barbara Keogh | Guest Star | ||
| Robert Putt | Guest Star | ||
| Karl Howman | Guest Star | ||
| Richard Simpson | Guest Star | ||
| Stanley Meadows | Guest Star | ||
| Peter Joyce | Guest Star | ||
| Kim Goody | Guest Star | ||
| Ron Pember | Guest Star | ||
| William Brayne | Director |