Howling II: Your Sister Is a Werewolf (also known as Howling II and Howling II: Stirba – Werewolf Bitch) is a 1985 American horror film directed by Philippe Mora and direct sequel to the 1981 film The Howling. The film stars horror film veteran Christopher Lee along with Reb Brown and Annie McEnroe as they try to defeat Sybil Danning's werewolf queen Stirba and stop a werewolf group's plans to conquer the world. Although Gary Brandner, author of The Howling novels, co-wrote the screenplay, the Howling II: Your Sister Is a Werewolf is largely unrelated to his 1979 novel The Howling II.