Criminal Minds' executive producer Simon Mirren has explained how A. J. Cook will leave the series.
Cook, who plays JJ, was dropped from the show earlier this year but will return to tie up her storylines.
Mirren has now suggested that JJ will be moving on to another job.
"We've always intimated that JJ's character has connections outside of our world - other more powerful elements in the government," he told TV Guide. "Those powers that she's connected with come back into her life. So basically, what we're saying is, our loss is going to be somebody else's gain."
http://www.digitalspy.com/ustv/news/a278197/criminal-minds-exec-explains-jj-exit.html
