The Mad House(1998)
(The third book in the Halloween series)
A novel by Kelly O'Rourke
Christine Ray's summer has been nothing but lame dates and boring camping trips. She wants at least one interesting adventure before it's over. Then she sees the ad: "Volunteer film crew needed for documentary on haunted sites. Spend the night at Smith Grove Mental Hospital . . . if you dare". She definitely dares. That place is the ultimate scare site--Michael Myers himself was locked up there 15 years. But what she and her filmmaking friends don't know is that Michael Myers still has a room at Smith Grove--and visiting hours are over!
Used availability for Kelly O'Rourke's The Mad House
February 1998 : USA Mass Market Paperback