Fans last saw Moore in the Season 12 finale, the actor exited the show after 11 seasons and 252 episodes.
“The only thing that’s similar is the name, the font of the letters, and the theme song,” he told EW last month.
Moore will appear in the fifth episode of Criminal Minds, which airs on Channel 7.
For those who need some more of, err, Moore, you can watch him on his new drama, S.W.A.T., which is an update of the ’70s police drama, which debuts Nov. 2 on CBS.