A serial killer stalks the coastal paradise of San Diego, leaving behind a trail of twisted clues that lead straight to Delilah's doorstep. Each victim bears a chilling connection to her late father, plunging Delilah into a harrowing race against time and memory. With her grip on reality slipping, she must confront the ghosts of her past to unmask the killer before they strike again. "The Fifth Lock" is a gripping psychological thriller that will keep you on the edge of your seat until the final, heart-stopping revelation. Join Detective Delilah Jackson on a journey through the darkest corners of the human psyche, where the only certainty is that nothing is as it seems