I absolutely loved this book. It's dark, upsetting, and I couldn't put it down. It's not exactly a mystery, but has an anxiety-filled, fast pace that makes it feel a bit like one. Clove is living a lovely normal life built on lies, and a letter she receives sends her into an anxiety spiral, convinced her life is about to explode. She's reliving (mostly) traumatic memories that she has avoided for years as her current life marches onward unaware of all Clove is hiding, and it's a wild ride being in Clove's head. The way the past and present collide is so satisfying and the ending is perfect. Maybe my fave book I've read this year!