Marlon Brando was originally offered the role of Lester Blaine
Mike Connors first film role.
According to a story told by Jack Palance, Joan Crawford and Gloria Grahame did not get along and got into a physical altercation at one point during the filming. The fight started after Grahame sat on the edge of the set during a Crawford closeup and very obviously sucked and smacked loudly on a lolly pop in an attempt to wind Crawford up. It worked, and Palance noted that the all male crew watched the fight for a few moments rather curiously before stepping in to end it.