'Escaped convict blackmails murderous doctor into helping him.' (British Film Catalogue)
| Actor | Role |
|---|---|
 Godfrey TearleRichard Sabine | Richard Sabine |
 Russell ThorndikeDr Munro | Dr Munro |
 Isla BevanJoan | Joan |
| FFred GrovesArthur Brandon | Arthur Brandon |
 John TurnbullInspector | Inspector |
| MMichael HoganNot listed | Not listed |
 Ben WeldenNot listed | Not listed |
 Kynaston ReevesNot listed | Not listed |
| SS. Victor StanleyNot listed | Not listed |
 Roland CulverNot listed | Not listed |