Mark Robson was a Canadian-born film director, producer, and editor. Robson began his 45-year career in Hollywood as a film editor. He later began working as a director and producer. He directed thirty-four films during his career, including The Bridges at Toko-Ri, Peyton Place, for which he earned his first Academy Award nomination, Von Ryan's Express, and Valley of the Dolls. Robson died of a heart attack after shooting his final film, Avalanche Express, in 1978.