Jessica Shepard, a newly promoted police inspector, is thrust into a high-stakes investigation when a serial killer starts targeting men she has recently slept with. Each victim displays a signature wound and is found near the San Francisco waterfront, intensifying the urgency to catch the perpetrator. Jessica's past is shadowed by her father's violent legacy and her own struggles with addiction, making her a prime suspect in the eyes of her colleagues. As she delves deeper, she begins experiencing blackouts, further complicating her ability to distinguish between reality and her fears.

Her partner, Mike Delmarco, tries to support her through the turbulent case, but his efforts often clash with those of their superior, Lieutenant John Mills. Tensions mount within the department as Jessica's mental state deteriorates. Clues lead them through a maze of deceit, connection to past traumas, and betrayal within their own ranks. As the body count rises, Jessica battles to prove her innocence and uncover the truth, all while grappling with whether she herself might be the hunter turned hunted.