Before the adventures that made them legends, they were charming mastermind Robert Leroy Parker, alias Butch Cassidy, and crack-shot outlaw Harry Alonzo Longabaugh, soon to be known as The Sundance Kid. This is the 'prequel' of how they met, their … William Katt, Tom Berenger, Jeff Corey, John Schuck, Michael C. Gwynne, Peter Weller, Brian Dennehy Added on Starz 2023-02-02. Youtube Trailer