"JoAnn Chaney's book, mysterious with all that is concealed and undeclared, compels the reader to acknowledge that things are not as simple as we like to believe, and to recognize that evil does not always lay outside of us, but deep within us. Chaney's psychological insights and social perceptions are infallible - brutal, indignant, and full of surprises."
-Susanna Moore author of The Whiteness of Bones and In the Cut
"Superb characters, sparkling dialogue, and a gripping, terrifying plot, plus flashes of humour to boot; this book has it all. It's very hard to believe this is Ms. Chaney's first novel."
-Chris Pavone, New York Times bestselling author of The Travelers
“In WHAT YOU DON’T KNOW, JoAnn Chaney beautifully analyzes the effect a monster can have on those in their orbit and how, in the need to catch one, so much is revealed about the monsters we hide in ourselves. A masterclass in character study, a beautifully woven story, and truly chilling at its core, this is a literary crime novel not to be missed!"
—Sarah Pinborough, author of Behind Her Eyes