Two Mules for Sister Sara

Two Mules for Sister Sara is a 1970 American-Mexican Western film in Panavision directed by Don Siegel and starring Shirley MacLaine (billed above Clint Eastwood in the film's credits, but not on the poster) set during the French intervention in Mexico (1861–1867). The film was to have been the first in a five-year exclusive association between Universal Pictures and Sanen Productions of Mexico. It was the second of five collaborations between Siegel and Eastwood, following Coogan's Bluff (1968). The collaboration continued with The Beguiled and Dirty Harry (both 1971) and finally Escape from Alcatraz (1979).