Pretty Dead Queens by Alexa Donne

After her mom dies, seventeen-year-old Cecelia moves in with her eccentric grandmother, a famous writer known for her bestselling novel about her high school’s homecoming queen who drowned in the 70s. Cecelia, barely settled into her grandmother’s creepy Victorian mansion, finds her classmate and homecoming queen drowned in the same way and becomes determined to find the copycat killer. As her investigation unfolds and she delves deeper into the town history and connection between the murders, Cecelia discovers secrets the townsfolk would rather have remained hidden. Donne packs her novel with plenty of angst and drama that isn’t reserved for just the teens in the small California town, and the rich backstories of the cast will keep you guessing who the murderer is all the way up until the exhilarating climax in the final chapters.