Richard Burton as Zeb Kennedy

Robert Ryan as Thor Storm

Carolyn Jones as Bridie Ballantyne

George Takei as Wang

Diane McBain as Christine Storm

Martha Hyer as Dorothy Wendt Kennedy

Jim Backus as Dave Husack

Shirley Knight as Grace Kennedy

Sheila Bromley as Lucy Husack

Ray Danton as Bay Husack

Karl Swenson as Scotty Ballantyne

Barry Kelley as Einer Wendt

Steve Harris as Christopher Storm

Sheridan Comerate as Ross Guildenstern

I. Stanford Jolley as Mr. Lawson

Carol Nicholson as Grace Kennedy (as a child)

Alan Roberts as Christopher Storm (as a child)

Sam McDaniel as George, the train porter

Dorcas Brower as Thor's Eskimo wife

Norma French as Muriel

Sal Ponti as Jerry - Military Pilot

Franklyn Farnum as Committee Member (uncredited)

Art Felix as Legislature Meeting Spectator (uncredited)

Dorothy Partington as Party Guest (uncredited)

Sal Ponti as Jerry - Military Pilot (uncredited)

Red West as Train Passenger (uncredited)

Judd Holdren as Muriel's Escort (uncredited)

Max Wagner as Party Guest (uncredited)