Locals in an Italian village believe evil has taken over the estate of a recently deceased pianist where murder has taken place. The alleged killer: the pianist's severed hand.
| Actor | Role |
|---|---|
 Robert AldaBruce Conrad [Conrad Ryler in on-screen end credits] | Bruce Conrad [Conrad Ryler in on-screen end credits] |
 Andrea KingJulie Holden | Julie Holden |
 Peter LorreHilary Cummins | Hilary Cummins |
 Victor FrancenFrancis Ingram | Francis Ingram |
 J. Carrol NaishPolice Commissario Ovidio Castanio | Police Commissario Ovidio Castanio |
 Charles DingleRaymond Arlington | Raymond Arlington |
 John AlvinDonald Arlington | Donald Arlington |
 David HoffmanIngram's Attorney Duprex | Ingram's Attorney Duprex |
 Barbara BrownMrs. Miller | Mrs. Miller |
 Patricia BarryClara the Maid | Clara the Maid |
 William EdmundsIngram's Servant Antonio | Ingram's Servant Antonio |
 Belle MitchellGiovanna the Cook | Giovanna the Cook |
 Ray WalkerEdward Miller | Edward Miller |
 Pedro de CordobaSidewalk Cafe Waiter Horatio | Sidewalk Cafe Waiter Horatio |