The wealthy Mr. Clyde is found dead, shot to death in his home. Inspector Carr suspects a conspiracy between the victim's young wife and her lover, Capt. Rugg. But Doctor Crabtree the criminologist never so quick to jump to conclusions as Inspector Carr.
| Actor | Role |
|---|---|
 Donald MeekDr. Amos Crabtree | Dr. Amos Crabtree |
 John HamiltonInspector Carr | Inspector Carr |
 Helen FlintAnn Clyde | Ann Clyde |
 Lyle TalbotPolice Capt. Dick Rugg (as Lysle Talbot) | Police Capt. Dick Rugg (as Lysle Talbot) |