Criminal Minds: A.J. Cook will be back to "Criminal Minds". After being in talks for a week, the blonde beauty has finally closed a two-year-deal to return to the crime drama series as a regular, so Deadline reports.
Cook will first reprise her role of Jennifer 'JJ' Jareau as a guest star in the series' sixth season finale which is set to air on May 18. The 32-year-old actress will later rejoin the CBS show full-time when it returns in the fall.
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