In Tracy Sierra’s wilderness thriller Warning Signs, a backcountry ski trip turns into a nightmare when an avalanche traps 12-year-old Zach, his father and a group of wealthy investors on a Colorado mountain. Eerie animal remains, a missing person and a menacing monster—maybe man, maybe beast—amp up the tension as Zach battles the environment and the reckless adults around him. With a sense of dread and anticipation, the novel builds to a pulse-pounding climax that hits like an avalanche. | 
