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Criminal Minds: Reid Gets Bad News About His Mom in This Exclusive Sneak Peek

Poor Diana

Joyce Eng

Well, this isn't good.

Just when we thought his mom was doing better -- after that trip to Paris and all -- Reid (Matthew Gray Gubler) will get some upsetting news on Wednesday's episode of Criminal Minds.

In our exclusive sneak peek, Reid receives a call from the Las Vegas police, informing him that his schizophrenic mother Diana, who was diagnosed with dementia last season, was found wandering around a casino. Rossi (Joe Mantegna) and JJ (A.J. Cook) encourage a distraught Reid to leave their case to be with her. (Sad Reid makes us sad.)

Exclusive: Jane Lynch is returning to Criminal Minds

This development is likely setting up Jane Lynch's long-awaited return as Diana in Episode 11. As we previously reported, Lynch will reprise her role for the first time in eight years for what showrunner Erica Messer describes as a "heavy Reid story."

"[Her return] will be good," Messer teased. "That's why everybody's excited. It was more important than ever to have Jane come guest-star because it will be a big story."

Criminal Minds airs Wednesdays at 9/8c on CBS.

(Full disclosure: TVGuide.com is owned by CBS.)