Behind Monastery Walls (German: Hinter Klostermauern) is a 1952 West German drama film directed by Harald Reinl and starring Olga Tschechowa, Philip Dorn and Katharina Mayberg. It takes place in a priory and is sometimes known by the alternative title of The Unholy Intruders. It was shot at the Bavaria Studios in Munich. The film's sets were designed by Robert Herlth and .