Four people's lives converge as they re consumed by the dangers of world, both real and imagined Mark Powell has been hailed as "one of the best novelists of his generation" by Ron Rash and "a writer on the verge of greatness" by Pat Conroy. For fans of Adam Johnson's Fortune Smiles and Denis Johnson's The Laughing Monsters Echolocation tackles big questions of our time through characters who are startlingly real Tess is a stay-at-home mother who has developed an odd obsession: watching terrorist ransom videos online. In particular, she's become fixated on an American journalist being held by ISIS. Her husband John is more distant than ever, and in her isolation she finds an eerie resonance between the journalist's captivity and her own. John is haunted by his past: a dead wife, an estranged daughter, a murky career path. Now employed at a small college in Georgia, he is rattled when a former associate, James Stone, approaches him with a favor, or rather, a demand. John's colleague Professor Edward Hadawi is being investigated by the FBI for his involvement with an extremist religious group, and if John doesn't turn over files from their shared hard drive, he may finally face repercussions for his own questionable work at Site Nine years earlier. James is looking for Hadawi and Reed Sharma, a young man who has fallen under his spell. Tormented by the part he's played in entrapping countless youth on the edge, James will stop at nothing to find the boy and assuage his conscience.