Four mental patients - who, due to unauthorized experiments, believe they're living in a dream and have shed all moral imperatives - escape and find their way to the nearest bus-load of stranded schoolgirls.
| Actor | Role |
|---|---|
 Anthony ForrestPete | Pete |
| TTom MarshallMike | Mike |
| GGeorgina KeanAgatha | Agatha |
 Alison ElliotSandy | Sandy |
 David JacksonMr. Trubshaw | Mr. Trubshaw |
| JJane HaydenJulie | Julie |
| JJoanne GoodMary | Mary |
| PPeter SpraggonMr. Jones | Mr. Jones |
| JJayne LesterElizabeth | Elizabeth |
 Lisa VanderpumpAnne | Anne |
| CChubby OatesDriver | Driver |
 Hilda BraidMrs. May | Mrs. May |
 Elizabeth CounsellMiss Lilac | Miss Lilac |
| JJean ReeveMrs. Hargreaves | Mrs. Hargreaves |
 Hugh RossMinister | Minister |
| JJames KerryPsychiatrist | Psychiatrist |