It's time for McGarrett family reunion on Hawaii Five-0.

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Steve (Alex O'Loughlin) doesn't have a lot of family, but the few relatives who do share the McGarrett name will gather on Oahu for episode 12 (airing order unconfirmed).

Titled "Ua ola loko I ke aloha," the upcoming story will see Orange Is the New Black's Taryn Manning return as Mary Ann McGarrett alongside Carol Burnett's Aunt Deb. It is unknown why Steve's aunt, sister, and niece will drop by the Aloha state, but previous teasers from showrunner Peter Lenkov indicate that this episode may signal the end of Aunt Deb's storyline.

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"It's closure for her story," Lenkov ominously revealed to Entertainment Weekly. "If you remember, she got married in Hawaii to Frankie Valli. She's actually coming back alone this time."

Aunt Deb and her husband were both battling cancer last time they appeared, and this new bodes badly for their chances of recovery.

That being said, the episode will certainly have its light moments. Mary Ann's adoptive daughter is growing up, and it will be amusing to see Steve interact with his tiny niece once more. Aunt Deb, meanwhile, will get a tattoo!

Scroll through the photos below to go behind the scenes of episode 12.

Hawaii Five-0 airs Fridays at 9 p.m. ET on CBS.

Aunt Deb gets a tat A photo posted by plenkov (@plenkov) on Nov 3, 2015 at 11:39am PST

 Here we go... #H50

A photo posted by plenkov (@plenkov) on Nov 4, 2015 at 10:20am PST

The cutest little tv daughters on #h50 #cbs A photo posted by Taryn Manning™ (@tarynmanning) on Nov 3, 2015 at 11:41pm PST

Tags
Hawaii Five-O, Television, CBS