Despite her relative inexperience, Leigh was chosen to play Ophelia to Olivier's Hamlet in an Old Vic Theatre production staged at Elsinore, Denmark. Olivier later recalled an incident when her mood rapidly changed as she was preparing to go onstage. Without apparent provocation, she began screaming at him before suddenly becoming silent and staring into space. She was able to perform without mishap, and by the following day she had returned to normal with no recollection of the event. It was the first time Olivier witnessed such behaviour from her. They began living together, as their respective spouses had each refused to grant either of them a divorce. Under the moral standards then enforced by the film industry, their relationship had to be kept from public view.