Lydia, however, soon becomes suspicious of Holly when she discovers Holly’s lack of any social media presence. Some time passes and Tyler begins to suspect that Holly is dangerous, especially when meeting her stepmom, Corinne, who reveals that Holly takes medication for a mental disorder. The next day, Holly intentionally causes Lydia to have an extreme allergic reaction after overhearing her telling Ali that she doesn't buy Holly’s story and is going to find out what's going on.