A cat and mouse game develops between a big man of crime and a young detective constable. But the big man doesn't realize, that this mouse roars.
| Actor | Role |
|---|---|
 Richard BeckinsaleLewis | Lewis |
 Barry LinehanCummins | Cummins |
 Bryan PringleArthur | Arthur |
 Arthur WhiteLaidlaw | Laidlaw |
| RRobin WentworthBassock | Bassock |
| HHarry HutchinsonRoadsweeper | Roadsweeper |
| MMichael LoganHarding | Harding |
 John HollisBlond | Blond |
 Michael BrennanBonning | Bonning |
| JJames MellorBeck | Beck |
| JJohn AshThe Boy | The Boy |
| CCynthia BizerayThe Girl | The Girl |