The Power

George Hamilton

Jim Tanner

Suzanne Pleshette

Margery Lansing

Richard Carlson

N. E. Van Zandt

Yvonne De Carlo

Sally Hallson

Earl Holliman

Talbot Scott

Gary Merrill

Mark Corlane

Ken Murray

Grover

Barbara Nichols

Flora

Arthur O'Connell

Henry Hallson

Nehemiah Persoff

Carl Melnicker

Aldo Ray

Bruce

Michael Rennie

Arthur Nordlund

Miiko Taka

Mrs. Van Zandt

Celia Lovsky

Mrs. Hallson

Vaughn Taylor

Mr. Hallson

Lawrence Montaigne

Briggs

Beverly Powers

Sylvia

Forrest J. Ackerman

Delegate A.C. Fogbottom (uncredited)

Daniel Elam

Scientist (uncredited)

Ken DuMain

Fun House Onlooker (uncredited)