From Peter Finch biography book : Finch Bloody Finch 1980
On one cold night at the end of January 1953, destiny tolled again for Peter Finch. This time it caught him sleeping. It was two o’clock in the morning and the doorbell was ringing insistently. Tamara woke up, faintly alarmed at the sound, threw on a robe and opened the front door a crack. She was confronted by the vision of Vivien Leigh in a diaphanous white evening dress and a floor-length mink coat. She was carrying a script. Tamara let in her guest.
She noticed that Vivien seemed in a strange state of elation; everything about her, her speech, her movements, her gestures, seemed to be speeded up. Vivien explained that she must talk to Peter. She had seen him playing Mercutio at the Old Vic several nights before and she was full of high praise for his performance.
Tamara went to awaken Peter and the three of them sat in the living-room while Vivien continued talking of his Mercutio in laudatory, even adulatory terms. Then she got down to business. She had decided that Peter was to co-star with her in a new major film Paramount was making called Elephant Walk.
The original choice for the role had been Olivier but he was exhausted after filming The Beggar's Opera and needed a rest. After seeing his Mercutio, Vivien insisted on Peter.
it seemed that Vivien — not for the first time — was going to get her own way. Paramount agreed that though Peter Finch ranked internationally as a complete unknown, he should be offered the star part of the tea-planter.