The Murders of Molly Southbourne

This book is so. Strange. A woman wakes up in a pool of her own blood, chained to a wall in a windowless room. A woman who appears to be her captor enters, sits down, and begins to tell her own life story. The captor is named Molly. She was raised on a farm by her parents. Whenever Molly bleeds, more Mollys spring from the blood. And then those other Mollys try to kill her.

Astoundingly, both a well crafted and relatable coming of age narrative and also a perplexing science fictional parable with plenty of mysteries left at the end.