The Howling is a 1981 American horror film directed by Joe Dante, and starring Dee Wallace, Patrick Macnee, Dennis Dugan, and Robert Picardo. Based on the novel of the same name by Gary Brandner, the film follows a television newswoman sent to a remote mountain resort after a fatal incident with a serial killer, unaware that the inhabiting residents are werewolves.

Based on that paragraph can we conclude that this sentence is true?
The movie adaptation is not faithful to theme of the book
It's impossible to say