The rustling Makani hears coming from outside could be real or imagined. Either way, it builds tension. One can imagine how such a scene would play out in a typical slasher movie, too. Perkins makes repeated nods to conventional elements of the horror genre throughout the book, and this scene is an example of this tactic. This scene also resonates with the opening scene with Haley Whitehall and the egg timer—Haley, too, felt uneasy but discounted her feelings as unfounded and irrational. Might something violent and sudden happen to Makani as it did to Haley? Makani’s anxiety about how Ollie got her number seems to call back to her overarching anxiety about people knowing too much about her personal life and her past. She’s wary that if Ollie has found some way to get her number, he can just as easily find out about her past—and judge or reject her for it.