A great murder thriller that examines the fine line between brilliance and insanity. Mason is excellent as a famed surgeon, unhappily married, who falls for another woman, unhappily married herself. When a death occurs, Mason is driven to do his own detective work and determine whether it was murder. He soon finds himself considering murder himself. Mason's real life wife, Pamela almost steals the show as a beautiful femme fatale. Literate script and fine acting with some great twists.