Marriage to Arthur Miller
In June 1956, Marilyn married for the third time, to playwright Arthur Miller. Miller was Jewish, and Marilyn studied under a rabbi prior to the marriage, converting to Judaism in July. Their marriage, like her previous two, was troubled from the start. Marilyn went to England to film The Prince and the Showgirl with Laurence Olivier, and problems between the two stars made for an uncomfortable and difficult filming. Olivier demanded Marilyn play the role similarly to the way Vivien Leigh had done in the stage version.
According to some biographers Monroe suffered a miscarriage during the production of The Prince and the Showgirl. Her dependence on drugs increased and when the film was completed Marilyn took a year and a half away from films. During the period of recovery she and Miller resided in New York, with time off in Connecticut and Long Island. Her health continued to deteriorate; diagnosed with endometriosis (a disease of the reproductive system) she suffered another miscarriage as well as an ectopic pregnancy. Her illness exacerbated her mental state, and her drug use spiraled out of control.