From New York Times bestselling author Lisa Unger comes the haunting short story of how one woman’s heroic vocation hides the secret guilt she’s tried to bury.

Charlie Kroft’s job at the crisis center means she’s often seen as a hero: she’s helped countless people climb out of the deepest pits of personal despair. But when one phone call thrusts Charlie into the spotlight, she must contend with the hidden pain that drives her…and with the mysterious stranger who knows the truth.

Lisa Unger’s Unknown Caller is part of We Could Be Heroes, a darkly inquisitive collection of short stories that examines heroic intentions versus their real-life consequences. Read or listen to each in a single sitting.