For the past 14 seasons, 'Criminal Minds' has brought audiences to the edge of their seats as the minds of FBI profilers crossed paths with those of some of the sickest serial killers in the nation. At times, viewers were allowed a character study of the show's FBI heroes.
As season 15 prepares to close out the crime-drama, it will be interesting to see who the powers-that-be will bring back. It's already been established that Shemar Moore's Morgan is a no-go. However, it's been reported that Jane Lynch will return as Spencer Reid's mother. Here's a flashback to some of the best episodes from past seasons.