In Season 11 of 'Criminal Minds', the FBI's Behavioural Analysis Unit (BAU) braves a relentless enemy that jeopardises their professional lives and demands unprecedented personal sacrifices. Tackling a network of cunning, cut-throat hitmen linked by the darknet, special agents Aaron Hotchner (Thomas Gibson), David Rossi (Joe Mantegna), Derek Morgan (Shemar Moore), Jennifer "J.J." Jareau (AJ. Cook), Dr. Spencer Reid (Matthew Gray Gubler), technical analyst Penelope Garcia (Kirsten Vangsness), and a new crew member, forensic psychologist Dr. Tara Lewis (Aisha Tyler), delve into the depths of the dark web - and put their lives in peril like never before. While taking down other serial killers along the way, the team can never rest easy... and they pay a price from which there's no coming back. The twists keep unraveling in all 22 spine-tingling episodes, proving that when you face the worst of the worst, the BAU is the best of the best.