The Night Sister by Jennifer McMahon

Once the thriving attraction of rural Vermont, the Tower Motel now stands in disrepair, alive only in the memories of Amy, Piper, and Piper's kid sister Margot. The three played there as girls until the day that their games uncovered something dark and twisted in the motel's past, something that ruined their friendship forever.

Recommended by Mrs. Gaudet, Spanish Teacher: “Literally so scary I turned all the lights on.”