When the past refuses to stay buried... the hunt begins again. After exposing the SHARP project and barely surviving its horrors, investigative survivor Anaya Sen is forced back into the shadows. A chilling message, a missing girl, and a mysterious audio file reignite her worst fears. As she races against time through secret labs, buried memories, and betrayal, Anaya uncovers Echo Protocol - a terrifying experiment designed to control the human mind. The deeper she goes, the more she realizes: this isn't just a cover-up. It's a countdown. With the world on the brink and a deadly kill-switch ticking inside an innocent girl, Anaya must choose between sacrifice and salvation. Echoes in the Dark is the explosive second installment in The Vanished Files, a thriller series packed with psychological tension, global stakes, and shocking revelations. Perfect for fans of Girl with the Dragon Tattoo, Jack Reacher, and Mindhunter.