who kills the main character in happy death day
Happy Death Day However, the next morning Tree wakes up again on her birthday. Confused and distraught over the fact that killing Tombs didn't stop the time loops, Tree returns to her room in order to run away, where Lori offers the cupcake again. Tree realizes that she had died in her sleep, and also notes that this was the only time she had ever eaten the cupcake. Tree realizes Lori is the true killer; Lori had poisoned the cupcake, but when Tree didn't eat it, she utilized her job in the hospital to frame Tombs for Tree's murder. Lori confesses she was jealous that Dr. Butler had shown interest in Tree over her before the two fight. Tree manages to stuff the cupcake into Lori's mouth before kicking her out of a window, sending her falling to her death.