A fire at a family home carries echoes of Sergeant Bishop's past. The only survivor a young boy, he is also marked as their serial killer's next victim. As the team rallies to keep the kid out of the hands of a madman, they are so focused on their victim they may miss something that causes one of their own to pay the ultimate price.

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.