Crooks in Cloisters(1964)

A life of crime can become a bad habit!

Having pulled off the smallest ever train robbery, Little Walter and his crew decide to get out of London. The six of them set up business in a disused monastery off the Cornish coast, despite the fact that none of them really qualifies as a monk - least of all Walter's moll Bikini. Bit by bit, the quiet way of life starts becoming a habit.