In New York City, FBI consultant Dr. Y/N is known for one thing: she can understand the human mind with terrifying precision. Trained since childhood by her psychologist father, she specializes in behavioral profiling, hypnosis, and memory reconstruction—tools she uses to dissect criminals faster than anyone else in the Bureau. But Y/N isn’t just solving cases. Sixteen years ago, her father was murdered by an infamous, never-caught serial killer known as The Hollow Man—a figure who didn’t just kill victims, but psychologically rewrote them before death. Now working with the FBI’s Major Crimes Unit in Manhattan, she trades her expertise for access to classified files connected to her father’s case, determined to uncover the truth no one else could solve. Assigned as her partner is Special Agent Luca Bennett, a disciplined and emotionally guarded detective shaped by a strict, high-pressure upbringing. Cold, controlled, and deeply reliable, Luca has spent his life mastering restraint—until Y/N arrives and begins dismantling every layer of emotional control he’s built. As they work alongside a fractured team of elite but damaged investigators, their cases begin to blur the line between current murders and Y/N’s past. New crime scenes echo The Hollow Man’s methods, and disturbing evidence suggests that the killer may have been part of something far larger than anyone realized. As Y/N and Luca grow closer while navigating manipulation, trauma, and buried FBI secrets, they are pulled into a psychological game where the mind itself becomes the battlefield. And the closer they get to the truth about The Hollow Man, the more Y/N begins to question whether she is hunting the past… …or still living inside its experiment.