Patrick Jane and his FBI pals are back at work on The Mentalist.

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The CBS drama won't return until 2015, but day one of filming for the premiere kicked off bright and early on Wednesday.

"Had to be here at 5am. I'm sleepy. HA!" tweeted actor Tim Kang (Cho) alongside a shot of the FBI bullpen.

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While Kang moved back into a familiar routine after six years on The Mentalist, newcomer Josie Loren (Agent Michelle Vega) spent the day as the series newbie.

"Thank u for an awesome 1st day!" tweeted the Make It or Break It vet on Wednesday afternoon. "Lucky to be joining such a great cast and crew"

With Kang, Rockmond Dunbar (Agent Dennis Abbot), and Loren all on set, it looks like the first day of shooting was concentrated primarily at the series' FBI headquarters. However, fans can glimpse Simon Bakers blond hair and glasses peeking out from behind a crewmember's shoulder in one of Kang's set photos (view here).

Although the premiere title has already been announced as "Orange Blossom Ice Cream," execs and actors have yet to drop any hints regarding the plot and the fate of Jane (Simon Baker) and Teresa Lisbon's (Robin Tunney) budding relationship. The pair finally made Jisbon a reality during the season 6 finale, but it is unknown how their story will play out (see video below).

Find out more when the Mentalist returns to CBS next year.

(EDIT: 'Orange Blossom Ice Cream' will not be the premiere since the series is filming out of order.)