The arrival of Mr. Knox, the new sports instructor at a British public school, heralds trouble. He imposes his dominant personality to influence colleagues and the headmaster alike, and then attempts to force himself on Millicent, the assistant matron.
| Actor | Role |
|---|---|
 Garry MarshKnox | Knox |
 Ann ToddMillicent | Millicent |
 Robin IrvineDavid Lake | David Lake |
 John TurnbullGordon Duff | Gordon Duff |
 O.B. ClarenceSlade | Slade |
| HHerbert RossSullivan | Sullivan |
 Mary ClareMrs. Venner | Mrs. Venner |
 Ethel WarwickMatron | Matron |
 Rène RayKitty Williams | Kitty Williams |