Identical twin gynaecologists Elliot and Beverly share everything in their life. Elliot, self-assured and experienced, passes his unwitting sexual conquests to shy and sensitive Beverly when he tires of them. However, when Beverly falls in love for the first time with a patient, the affair drives the brothers apart - and both men begin to lose their grip on their sanity. David Cronenberg's psychological thriller, starring Jeremy Irons in a dual role alongside Genevieve Bujold.