A brutal murder. A forgotten past. A profiler with a mind trained to kill. Elias Creed walked away from the FBI after his sister vanished without a trace. But when a body turns up in his hometown—killed the exact same way his sister died—he’s forced back into the shadows of Hollow Creek. The killer isn’t just copying a cold case. He’s sending Elias a message. Every murder is a piece of a puzzle tied to a classified government program—one Elias was a part of. One designed to create the perfect behavioral weapon: The Echo Project. Now Elias must face what he was trained to forget. Because this killer isn’t a stranger… He’s one of them. And Elias might be next.