Gideon's back! Sort of. Ben Savage will play a young version of Mandy Patinkin's character on Criminal Minds later this season, TVGuide.com can exclusively reveal.
The 13th episode — which executive producer and showrunner Erica Messer co-wrote with star Kirsten Vangsness and previously described as a "love letter to fans" — will feature flashbacks to the early days of the BAU in the '70s when Gideon and Rossi (Joe Mantegna) first got their start. A present-day case will force Rossi to recall a case they had worked on back then. Robert Dunne, who played young Rossi in Season 8, will reprise his role for the flashbacks. The episode is currently slated for January.
Source:
Streaming Options