When a student is found murdered on the campus of a local high school, Nash and Williams must face off with their fellow detectives in pursuit of the truth, while Bishop is missing in action, and Beck's brother, Leo, is falling back into old habits.

21 Weeks is a fast-paced police procedural thriller series that ramps up in intensity with each victim that falls until its explosive final week.

Warning: This series is about a serial killer. There will be violence. There will be language. There will be other adult things. It is intended for a mature audience.