Courtney Summers's New York Times bestseller, Edgar Award winning breakout novel, now in trade paperback! Alternating between Sadie's unflinching voice as she hunts her sister's killer and the podcast transcripts tracking clues she's left behind, Sadie is a breathless thriller about the lengths we go to to protect the ones we love and the high price we pay when we can't. It will haunt you long after you reach the final page.