A doctor and his wife are held hostage in their country home by an escaped convict and his sidekick, but a journalist's arrival complicates matters.
| Actor | Role |
|---|---|
 Denholm ElliottDr. Frank Henson | Dr. Frank Henson |
 Tandy CronynTracy Loxton | Tracy Loxton |
 Anthony ValentineGarard | Garard |
 Claire NielsonHilary | Hilary |
| AAlan BrowningSupt. Brook | Supt. Brook |
 John MorenoFilton | Filton |
 David HorovitchTredgett | Tredgett |
| DDennis ChinnerySergeant | Sergeant |
| KKen ParryTaxi Driver | Taxi Driver |
 Brian HainesInspector | Inspector |
 Mark Wing-DaveyCater | Cater |
 Robert LindsayPoliceman at Roadblock | Policeman at Roadblock |
| DDerek ChaferPoliceman (uncredited) | Policeman (uncredited) |
| KKevin MoranPoliceman (uncredited) | Policeman (uncredited) |
| MMaureen NelsonPolicewoman (uncredited) | Policewoman (uncredited) |