The Reincarnation of Karma.

In India, Leslie Adams dreams of a priestess who is turned into a snake by Karma, the high priest. While touring a ruined temple, he finds the snake, who is said to resume human form every 100 years. Assuming her human form, Qunitreea give Leslie's fiancée an amulet, causing her to fall into a permanent sleep. Leslie realizes he is the high priest Karma reincarnated, and that Qunitreea has had her revenge.