‘Criminal Minds’ Season 12 Ends With A ‘Cliffhanger’ As Shemar Moore Returns As Derek Morgan [SPOILERS]

"Criminal Minds" Season 12 is down to its last few episodes before the current season of the CBS drama ends. The show recently featured a major story arc based on Spencer Reid and his arc will soon wrap up in the upcoming episodes leading to the finale.

Spoilers ahead! Continue reading if you want to learn more about the details of this story.

"Criminal Minds" Season 12 spoilers tease that the CBS drama will be closing off its season with yet another cliffhanger. Speaking to TVLine, showrunner Erica Messer said that viewers should not easily breathe in a sigh of relief until the last few moments of the series because the BAU will "get another curve ball" just when they thought that they have the situation under control.

It remains to be seen whether "Criminal Minds" Season 12 finale will see the end of Mr. Scratch or if this cliffhanger will get the character involved through the next season. Shemar Moore will also be returning as Derek Morgan in the finale, but his role is only a short one, as his character will be helping the BAU find out Mr. Scratch's whereabouts.

The arc on Matthew Gray Gubler's Reid will also wrap up on the upcoming "Criminal Minds" Season 12 episodes entitled "Green Light" and "Red Light." Many fans believe that Reid will finally be able to get himself free from prison and reunite with his mother, as Jane Lynch will be returning for the role in the finale, notes Carter Matt.

Reid may also want to get back at Mr. Scratch for putting him through prison on "Criminal Minds" Season 12. Spoilers for the upcoming finale tease thatReid will be squaring off "with an old nemesis" as the team deals with the fugitive who has been playing games on them for the rest of the season.

Did you enjoy the arc on Spencer Reid this season? Share your thoughts on "Criminal Minds" Season 12 in the comments section below!