Who is the SUBJECT? For Agent Sadie Bonds, answering this question means choosing between life and death for someone close to her. THE SUBJECT'S latest crime in the heart of the Arlington Police Department has every member of the department on the lookout for a sadistic maniac within their ranks. Suspicion casts a shadow not only over the task force, but also over Sadie and Colton's bond, testing the strength of their love. Revealing the truth means they will have to face their past. Sadie's relationship with Colton has calmed her inner demons, but is she strong enough to face the real monster? All the actors take their places on stage for the final act. When the UNSUB controls the game, even Sadie and Colton become victims, falling deep into darkness that threatens not only their lives, but their trust in each other. As Sadie navigates the labyrinth, Colton does everything he can to protect her—even if it means he has to reveal his own secrets. The truth is liberating. But for Sadie, the truth could be devastating. She must deal with the threat or risk losing everything and everyone she loves.