Cronenberg, director of 'The Fly', based this controversial and stylish psychological horror on a bizarre true story. Jeremy Irons delivers a disturbing performance as twin gynecologists Elliot and Beverly Mantle. Intrigued by the mysteries of sex and anatomy, the brothers grow from inseparable playmates to world-renowned specialists. Sharing everything from their hi-tech clinic to their women, Elliot and Beverley seem inseparable. The entrance of Claire (Bujold), an actress seeking fertility treatment, changes their relationship forever. Both twins seduce her, but shy, sensitive Beverly falls in love and attempts to break free from his charming brother - with catastrophic consequences.