by Matt Webb Mitovich
Criminal Minds' JJ Jareau is due to get a devastating blast from the past — and it will come in the form of Tahmoh Penikett.
As first revealed by Instagram photos shared by producer Rick Dunkle, the Battlestar Galactica/Dollhouse alum will appear in Episode 200 of the CBS crime drama, and now TVLine can reveal exclusive details.
Penikett will play Michael Hastings, someone with whom JJ...
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