'Necronomicon – Sinful Dreams') is a 1968 West German erotic horror film directed by Jesús Franco and starring Janine Reynaud, Jack Taylor, Adrian Hoven, and Michel Lemoine.

In Lisbon, Lorna Green works as a nightclub dancer who performs sadomasochistic acts that end with simulated murders, which shock and titillate the club patrons.

She is overseen by her manager, William Francis Mulligan, an American who "discovered" Lorna and helped her forge her nightclub act.

She travels there by trolley, and is met by Pierce, a mysterious man who feels he has manifested Lorna as a "disciple of evil" and a devil on earth to do his bidding.

The following day, Lorna and William stroll through the city together and stumble upon a funeral wake where numerous women mourn in the street.

Lorna awakens from the nightmare to find her apartment largely empty, as she has made plans to relocate to Berlin with William.

[6] After finishing work on his film Lucky, the Inscrutable, he went to production manager Karl-Heinz Mannchen with an eight-page script for Succubus.

[5] After securing funding, model Janine Reynaud was cast in the film after being introduced to Franco by her husband, actor Michel Lemoine.

[5] Producer Adrian Hoven contacted Pier A. Caminnecci, who took an interest in actress Reynaud and agreed to finance the film.

[4][8] The film was acquired by American International Pictures and released in the United States under the title Succubus,[2] opening in New York City on April 25, 1969.

"[13] David McGillivray (Monthly Film Bulletin) claimed that "the most positive thing one can say about Succubus is that it is strikingly different from anything Jesús Franco has directed either before or since.

In all other respects, however, the film is an absurdly hit-or-miss affair with scenes that have a certain bizarre appeal (shop window dummies coming to life) juxtaposed with others of crushing banality.

"[2] Kevin Thomas of the Los Angeles Times panned the film as "another sleazy piece of European-made sexploitation, arty to the point of incoherence.

[16] It was released again on July 25, 2006 with an interview with director Jesús Franco and actor Jack Taylor as bonus features by Blue Underground.