Characters played by John Ireland
John Howard Barrington
Characters played by Mercedes McCambridge
Connie Carter
Characters played by James Barton
Ezra Thompson
Characters played by Emlyn Williams
Dr. David Dunbar
Characters played by Lloyd Gough
Dr. Gordon
Characters played by Basil Ruysdael
Cyrus Barrington
Characters played by David Bauer
Level Louie (as David Wolfe)