It's the biggest mystery of the summer. Fans of One of Us Is Lying and Riverdale won't want to miss this YA thriller by international bestseller Kathleen Glasgow and Liz Lawson.

Kathleen Glasgow is the New York Times bestselling author of Girl in Pieces and How to Make Friends with the Dark and has been published in 26 countries. She lives in Tucson, Arizona, where she works in an office by day and spins stories by night. You can find her on Twitter @kathglasgow, on Instagram as @misskathleenglasgow or on her website kathleenglasgowbooks.com.