Pray for the Wildcats (1974)

Three ad agency executives are pressured into taking a motorbike trip to Baja by a big-ticket client. Along the way, the client is spurned by a young woman whose boyfriend sticks up for her. The client later disables their van, leading to their deaths in the desert. When the executives piece together what has happened, it leads to a showdown.
Robert Michael Lewis
Andy Griffith, William Shatner, Robert Reed, Marjoe Gortner, Angie Dickinson, Janet Margolin, Lorraine Gary, John Barbour, Robert Burton, Marilyn Hearn, William Wintersole, Paul Kent, John Brascia
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