Pretty Little Liars showrunner Marlene King is a fan of the elaborately esoteric hints, and her recent “mystery clue” is a perfect example. What did Marlene share as a tease about Season 4, and what meaning can we glean from it?

“PLL MYSTERY CLUE: ‘Now You See Me, Now You Don't,’” tweeted Marlene last week, sending our speculation into overdrive.

If we take clue at face value, it fits in nicely with the overall theme of Season 4A: the question of whether Ali is alive or not. Season 3 was rife with clues that Alison is alive, well, and appearing to the Liars in particularly dire situations. But, their “dead” best friend always disappeared before the Liars could determine if she was real or just a hallucination brought on by drugs, head trauma, or mental illness. To us, Marlene’s clue implies there is a purpose behind these “hallucinations,” that they are either real or have been purposefully orchestrated by someone. Either way, we don’t think the Liars are just seeing things.

As for a more allusionary meaning, could Marlene’s clue refer to something specific? There is a 1999 country music song by the name of “Now You See Me, Now You Don’t.” The Le Ann Womack tune refers to a bad break-up, but the lyrics are fitting: “Now you see me. Now you don’t. First you do, but then you won’t. Watch me vanish right before your eyes. You might think you see me there in a cafe on a street somewhere. Yeah, that might be me, but I’ll be gone. Now you see me, now you don’t.” Spooky.

What do you think Marlene’s clue means? Do you think Ali is alive? Let us know in the comments below!

Catch the next episode of Pretty Little Liars on June 25, 2013 at 8 p.m. ET/PT on ABC Family.