Tahmoh Penikett Tahmoh Penikett

Tahmoh Penikett has landed a guest-starring role on Criminal Minds' 200th episode, TVGuide.com has confirmed.

The Battlestar Galactica and Dollhouse alum will play Michael Hastings, a former co-worker of JJ's (A.J. Cook) from her unseen gig at the State Department in Season 6. Michael will help shed light on what happened to JJ during her time away from the BAU.  

Winter TV 2014: Must-see new shows

The news of Penikett's arrival first came out on the Instagram account of producer Rick Dunkle. "Battlestar BAU Crossover?" he wrote alongside a photo of Penikett and former Caprica star Esai Morales, who joined Criminal Minds earlier this season as the new section chief Mateo Cruz.

Penikett most recently guest-starred on Supernatural, and will next appear on The CW's new series Star-Crossed.

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

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