Alex Medbourne/Dr. Giacomo Rappaccini/Gerald Pyncheon
Vincent Price
Dr. Carl Heidigger
Sebastian Cabot
Giovanni Guasconti
Brett Halsey
Sylvia Ward
Mari Blanchard
Alice Pyncheon
Beverly Garland
Jonathan Maulle
Richard Denning
Beatrice Rappaccini
Joyce Taylor
Prof. Pietro Baglioni
Abraham Sofaer
Hannah Pyncheon, Gerald's Sister
Jacqueline de Wit
Lisabetta, the landlady
Edith Evanson
Ghost of Matthew Maulle
Floyd Simmons
Cabman
Gene Stutenroth
Cabman
Gene Roth
George Sanders
Margaret Lindsay
Eli Wallach
Billie Burke
Gene Lockhart
Hannah Pyncheon
Jacqueline deWit