Cat People (1982)

The Cat People originated way back in time, when humans sacrificed their women to leopards, who mated with them. Cat People look similar to humans, but must mate with other Cat People before they transform into panthers. Irene Gallier was raised by adoptive parents and meets her older brother Paul for the first time since childhood. We follow brother and sister - who seem to be the only ones of their kind that remain. Irene is on the bridge of sexuality; she discovers love for the first time only to find that the shocking experience brings with it tragic results. However, the tremendous passion of her first romantic love is so strong, it bypasses the terror around her - including her brother's unusual demands - as it pushes her to her own bizarre destiny.