A doctor testing drugs on convicts gets mixed up in a murder investigation.
| Actor | Role |
|---|---|
 John HowardDr. Ross Williams | Dr. Ross Williams |
 Joan DixonLt. Joan McKenna | Lt. Joan McKenna |
 Walter KingsfordDr. J.P. Finley | Dr. J.P. Finley |
| LLynne CarterEthel Ganz | Ethel Ganz |
 Robert ShayneBarry Morgan | Barry Morgan |
 Kim SpaldingDuke Shaw | Duke Shaw |
| SSam ScarEddie Ganz | Eddie Ganz |
 Kenneth MacDonaldCol. Harris | Col. Harris |
 Dick CoganDan Staley | Dan Staley |
 Frank CadyMax Henry | Max Henry |
 Byron FoulgerJim Carlton, Realtor | Jim Carlton, Realtor |
 Ralph PetersBartender | Bartender |
 Lewis MartinAsst. District Attorney Walton (as Louis Martin) | Asst. District Attorney Walton (as Louis Martin) |
 Harry LauterRichard 'Dick' McKenna | Richard 'Dick' McKenna |
 Raymond LargayWarden Keaton | Warden Keaton |
 Bess FlowersNightclub Patron (uncredited) | Nightclub Patron (uncredited) |