who kills tree gelbman in happy death day
Happy Death Day Waking up in Carter's bed again, Tree convinces Carter of her predicament by showing that she holds foreknowledge of the day's events. Tree admits to Carter she doesn't like who she's become; she has also grown distant from her father ever since her mother passed away three years ago and that they had shared the same birthday. Tree catches a local news report on John Tombs, a serial killer who is being held in the hospital on her campus. Concluding that Tombs is her killer, Tree rushes to the hospital to warn of his escape. Tombs breaks free and nearly kills Tree, but Carter follows and rescues her. Unfortunately, Tombs snaps Carter's neck before chasing Tree to a nearby bell tower where she manages to subdue him with a crowbar. Realizing that Carter will remain dead if she doesn't restart the loop, Tree hangs herself from the tower.
Derek Wilton Derek died from a heart attack during a road rage incident on Mavis's birthday in 1997.