A Nun in the Closet by Dorothy Gilman

The cloistered Abbey of St. Tabitha inherited a house and 150 acres of land in upper New York. Being a democratic group, they elected Sister John to venture out in the world to examine their good fortune and she chose Sister Hyacinthe to accompany her. Shortly after arriving at their house which was almost hidden by vegetation, they discovered money and a man who had been shot and requested sanctuary. Soon they met a group of hippies and other migrant workers. Though they were out in the world less than a week they encountered illegal drug trafficking, discrimination, hit men, migrant workers and their problems and the Mafia. Sister John and Siter Hyacinthe maintained their faith and composure while dealing with all these factors and came up with a plan for their new wealth.