|Soledad Miranda||Condesa Oskudar|
|Dennis Price||Dr. Alwin Seward|
|Paul Muller||Dr. Steiner|
|Ewa Stroemberg||Linda Westinghouse|
|Michael Berling||Dr. Seward's Assistant|
Linda Westinghouse is an American living in Istanbul. After having a recurring dream in which she is seduced by a gorgeous vampire, Linda is sent to a small island for her work. There, she meets and is actually seduced by Countess Nadine, a dark, beautiful nightclub owner whom she immediately recognizes as the seductress from her dreams. When the conniving Dr. Seward learns of this, he contacts Linda, hoping to use her to become undead himself.