The Mentalist will get a blast from Patrick Jane's past as the series comes to a close.

Ominous Episode 8 Title Confirmed For 'The Mentalist', When Will Filming Begin?

The CBS drama will conclude it's run at the end of season 7, and two of Jane's old circus pals will return in episode 9.

Titled "Copper Bullet," the Tom Donaghy penned story will reintroduce viewers to Samantha (Tangie Ambrose) and Pete Barsocky (M.C. Gainey). Both character's previously appeared in season 3's "Cackle-Bladder Blood" and season 5's "Red John's Rules."

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"YOU ASKED!? Guess whose coming back to The Mentalist!?" Ambrose tweeted on Thursday. "SAM!!!!!!! WHOOO hoooo!!!!"

While Ambrose doesn't know what Sam will be up to during "Copper Bullet," she did reveal that filming will begin on Oct. 27.

The Mentalist only received a 13-episode order for season 7, and the final batch of Patrick Jane adventures will kick off with "Nothing But Blue Skies." The rest of the season will include "The Graybar Hotel," "Orange Blossom Ice Cream," an untitled episode 4 (formally referred to as "Pink Rocks), the Simon Baker-directed "The Silver Briefcase." "Green Light," "Little Yellow House," and "The Whites Of His Eyes."

Find out more when The Mentalist returns to CBS in 2015. Click the video below to catch up on the last few minutes of the season 6 finale.

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The Mentalist, Television, CBS