• "Pretty Little Liars" stars Shay Mitchell and Ashley Benson

"Pretty Little Liars" stars Shay Mitchell and Ashley Benson (Photo : YouTube)

In "Pretty Little Liars" season 6 episode 7 titled "O Brother, Where Art Thou," which will air on July 22, Tuesday, Charles DiLaurentis announces he is coming home for his birthday while Mona Vanderwaal (Janel Parrish) keeps off Mike Montgomery (Cody Christian). [SPOILER ALERT: Read at your own risk.]

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It appears that Mona Vanderwaal is still grounded in "Pretty Little Liars" season 6 episode 7 titled "O Brother, Where Art Thou" while Hanna Marin (Ashley Benson) receives a surprise. Along with Spencer Hastings (Troian Bellisario), she gives the teen fiend some visitors and gets shocked by it.

According to the ABC Family series executive producer I. Marlene King, there will be plenty of humor in "Pretty Little Liars" season 6 episode 7 titled "O Brother, Where Art Thou," which will also feature officers Lorenzo (Travis Winfrey) and Toby (Keegan Allen).

"As Alison and the PLLs get closer to learning A's identity, our masked stalker chooses to end the game with a bang," King told Us Weekly referring to the character played by Sasha Pieterse, who is set to star in the comedy drama "Burning Bodhi" opposite "The Big Bang Theory" star Kaley Cuoco-Sweeting.

One of the Liars is set to encounter a new enemy named Yvonne, a smart and sleek daughter of a politician, according to E! News. After the highly anticipated five-year time jump, Yvonne will cause some major drama for one of the Liars. The character will recur throughout the second half of "Pretty Little Liars" season 6, according to the publication.