Invasion (also known as Winter Moon) is a novel by author Dean Koontz, released in 1975 under the pseudonym Aaron Wolfe. Koontz later extensively revised this work and it was reissued in 1994 under the title Winter Moon. The story, which involves alien lifeforms entering rural Montana, draws some inspiration from Quatermass and the Pit, as evidenced by the name of the town in the story, Quartermass. Synopsis The first half of the book flashes between the lives of its two protagonists; a police officer living in the city, and his uncle who owns an isolated farm out in the countryside. One day, the police officer's life is changed forever when he gets into an intense shootout with a drug-crazed Hollywood director. The officer kills the director and saves the lives of several innocent bystanders, but his life is ruined when the cult director's fans and Hollywood associates cook up a deranged conspira