A.J. Cook, Kirsten Vangsness and Thomas Gibson A.J. Cook, Kirsten Vangsness and Thomas Gibson

J.J. fans rejoice! A.J. Cook has nabbed a two-year deal to return to Criminal Minds.

Cook, who left the CBS series in September after being dropped for "creative reasons," will appear in the Season 6 finale on May 18, Deadline reports. She'll rejoin the show full time in the fall.

A.J. Cook in talks for Criminal Minds return; Showrunner Ed Bernero exits

The procedural has undergone numerous changes this season. In addition to Cook's unexpected departure, Paget Brewster was demoted before deciding to leave. She has an option to return as a regular next year, but has recently joined the NBC pilot My Life as an Experiment. Rachel Nichols came on in December to fill the void. Original castmembers Thomas Gibson and Shemar Moore have yet to renew their contracts.

Check out photos of A.J. Cook

Earlier this week, showrunner Edward Allan Bernero announced to the cast that he was leaving the series. Longtime executive producer Erica Messer will take over.

Are you excited for the return of JJ?