Input the phrase "Charles DiLaurentis" into Ali's Pretty Little Liars memory bank and prepare to receive an error message.

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The formerly missing teen claims to have no knowledge of her alleged brother, but as per usual, it's difficult to tell whether or not the Queen of Mean is lying. Meanwhile, series creator Marlene King is being cagey with the truth.

"I can't baby," King told a fan when asked if she could confirm or deny Ali's knowledge base. "But this is #SummerOfAnswers so u will find out very soon!"

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For her part, Sasha Pieterse (Alison) is standing by the statement that Ali "has no clue who" Charles is. However, Pieterse cautioned She Knows that, as of that moment, the cast was not privy to all the twists and turns of the summer season.

"Not everything is written yet," Pieterse told She Knows. "You know, we're still in the process of filming, so I'm kind of in the dark about that, too. And I enjoy finding out all these different secrets that are coming about."

Do you think Ali knows more than she is letting on? Find out more when the young DiLaurentis and her father broach the subject of Charles in "Songs of Innocence." Click the video below to see a preview for the June 9 episode.

Pretty Little Liars airs Tuesdays at 8 p.m. ET on ABC Family.

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Tags: pretty little liars television ABC Family