Charles Cioffi
Maj. Bernard Caldwell (8 eps)
Robert Conrad
Jake Webster (8 eps)
Anton Diffring
Insp. Hoffman (8 eps)
Leslie Nielsen
Floyd Macklin (1 eps)
Cameron Mitchell
Charley Stokes (1 eps)
Maria Schell
Elga Compani (1 eps)
Jack Kruschen
Orloff (1 eps)
Walter Slezak
Tandler (1 eps)
Belinda Montgomery
Julie Hayes (1 eps)
Eduard Franz
Professor Hayes (1 eps)
Janaire
Nicole Fleming (1 eps)
L.Q. Jones
Slim Warfield (1 eps)
Peter Haskell
Jimmy Silver (1 eps)
Robert Gentry
Harry Warfield (1 eps)
Gerry Crampton
Freddy (1 eps)
Greta Gouriet
Librarian (1 eps)