Spot-welder Aaron Toft assumes the identity of Aaron Osango - an ex-spot welder who has been sentenced to death and is in jail in an African state.
| Actor | Role |
|---|---|
 Roy DotriceAaron Toft | Aaron Toft |
 Dan JacksonOsango | Osango |
 Lynn RedgraveIvy Toft | Ivy Toft |
| SStafford ByrneLord Wanstead | Lord Wanstead |
 Frank GatliffRandall Davis | Randall Davis |
| KKathleen MichaelHilda Toft | Hilda Toft |
 Ken JonesMr. Budge | Mr. Budge |
 Leon SindenDoctor | Doctor |
 Mollie SugdenDistrict Nurse | District Nurse |