Mike Montgomery is ready to re-enter the Pretty Little Liars mystery.

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Aria's (Lucy Hale) little brother has been AWOL for the first six episodes of season 5, but Cody Christian will take a break from terrorizing Beacon Hills to return to Rosewood in "O Brother, Where Art Thou?"

For viewers that have been waiting for Mona (Janel Parrish) and her pal to reunite, this is your chance.

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"Mona is shutting Mike out," ABC Family teased, indicating that Mona's post-dollhouse avoidance of Mike was clearly intentional. While Hanna (Ashley Benson) and the other Liars collapsed into their significant others arms following their 'A' induced trauma, Mona has steered clear of the youngster.

Despite this highly anticipated reunion, photos for episode 7 instead focus on a meeting between the two Montgomery siblings. It appears Mike may have some information for his big sis. Aria's chat with Mike will leave her with a folded sheet of paper and a look of consternation.

Do you think Mike has a larger role to play in the 'A' game, or is he just small potatoes? Sound off in the comments below.

Find out more when Pretty Little Liars air Tuesdays at 8 p.m. ET on ABC Family.