Detective Mara Ellison's first clue is a sound. At 2:47 a.m., an anonymous audio file lands in her inbox-a woman's final moments, recorded with chilling clarity. Hours later, the victim is found murdered exactly as the recording predicted. When a second file arrives foretelling another death, Mara realizes she isn't chasing a killer... she's following a script. Each recording is impossibly precise. Each murder unfolds exactly as foretold. And every message is sent directly to her. As panic spreads through the city, Mara turns to Theo Raines, a brilliant but reclusive audio forensics expert. Together, they uncover a disturbing pattern: the recordings aren't threats-they're prophecies. Someone is orchestrating murders with surgical precision, manipulating the future one victim at a time. But when the next file arrives, the voice on the recording is one Mara knows better than anyone. Her sister. To save her, Mara must unravel the truth behind the "echoes"-and confront a killer who always stays one step ahead, because he's already heard how the story ends. A relentless psychological thriller where every second counts and every sound is a clue, The Echo Killings will keep you listening long after the last page.