"In The Dark" -- The BAU believes two unsubs may be operating at the same time, when victims killed in two drastically different ways are discovered in the same city. Also, the team grapples with keeping Reid safe in prison, on CRIMINAL MINDS, Wednesday, March 22 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Pictured: Matthew Gray Gubler (Dr. Spencer Reid), Harold Perrineau (Calvin Shaw) Photo: CBS ÃÂ©2017 CBS Broadcasting, Inc. All Rights Reserved | Episode 12.17 - In The Dark | Promotional Episode Photos | Season 12 | criminal-minds | Gallery