Penniless Fred Bancroft, along with his new wife Molly, visits a sinister uncle he hasn't seen in years in hopes of living rent-free in his musty, decaying mansion.
| Actor | Role |
|---|---|
 Boris KarloffDr. Konrad Markesan | Dr. Konrad Markesan |
 Dick YorkFred Bancroft | Fred Bancroft |
 Carolyn KearneyMolly Bancroft | Molly Bancroft |
 Richard HaleProf. Everett Latimore | Prof. Everett Latimore |
 Henry HunterProf. Angus Holden | Prof. Angus Holden |
| BBasil HowesProf. Charing | Prof. Charing |
 Billy BeckProf. Grant | Prof. Grant |