Crooks in Cloisters (1964)

After executing an unusually small train heist, Little Walter and his gang flee London for a secluded monastery on the Cornish coast. Although none of the six truly embody the monastic lifestyle, especially Walter's girlfriend, Bikini, they attempt to settle into their new environment. As time passes, the tranquil rhythm of their surroundings begins to influence the group, challenging their criminal instincts and reshaping their lives in unexpected ways.