What actors and actresses appeared in Experiment Terror - 1962?

The film you are referring to is likely "The Terror" (1963) and not "Experiment Terror".

Here are the main cast members of "The Terror":

* Boris Karloff as Dr. Felix A. Gruen

* Jack Nicholson as Andrew Jackson "Andy" McDermott

* Sandra Knight as Carolyn "Cricket" McDermott

* Dorothy Malone as Dr. Elsa Gruen

* Stuart Whitman as Lieutenant John "Tex" Everett

Please note that "Experiment Terror" is not a known film title.