UPDATE: After watching February 18’s Pretty Little Liars Season 4, Episode 20: “Free Fall,” we now know that Ezra (Ian Harding) is not — we repeat NOT — "A." Showrunner I. Marlene King confirms it to E! News. "Ezra is not A," she tells the site, "but he is a pretty little liar." Ezra really has just been writing a true crime novel about Ali all along, just as he explained to Aria.

So yes, he's lied to her. Their entire relationship was built on a lie. But Ezra promises his feelings for Aria were genuine. And no, he is not "A."

Original article: We used to think the Pretty Little Liars writers would never make Ezra evil, but then Toby (Keegan Allen) happened, and in the Season 4 summer finale they pulled the biggest reveAl yet: Ezra is "A"... or so we think. 

But, is Ezra really "A"? And how did we not see that one coming? Let's take a look back at some of the clues that lead to this shocking reveal, and reflect on what the most recent episode (Season 4, Episode 17: Bite Your Tongue") tells us about how true this apparent twist is. There are definitely some things about this hot teacher that sets off warning bells, but so far, Ezra has been a tad too sloppy to be Uber "A." 

Why? Here are the reasons we think Ezra really could be "A".

The money: We're still highly suspicious of the pile of cash Ezra (Ian Harding) had hanging around during the Season 3 summer season. His story about how he sold his car was convoluted at best, and the fact that Jason (Drew Van Acker) was seen writing a check for $50,000 to a mysterious person right before Ezra was suddenly rolling in dough adds to our skepticism. After all, Marlene King has said there are "no coincidences" in Rosewood.

MIA: Speaking of coincidences, in Season 3, Episode 10: “What Lies Beneath” Ezra was MIA for a bit. He claimed it was because he was trying to buy the car back, but could it really have been for something "A" team related? Jason was also missing during that episode — could they have been meeting up?

His acceptance of the "Jenna Thing" and "A": This didn't make us that suspicious at the time, but, looking back, it seems like Ezra dealt with the realization of what the Liars did to Jenna (Tammin Sursok) surprisingly well. He also seemed to accept the idea of "A" easily. Unlike Caleb (Tyler Blackburn) or Paige (Lindsey Shaw) he hadn't had much firsthand experience with "A" to help ease him into the idea, and the fact that he actually originally pushed Aria (Lucy Hale) to spend more time with Jenna could be construed as suspect. Maybe he knew all along.

He was at the masquerade ball: The "A" team seemed highly active at the masquerade ball in Season 2, Episode 25 (“UnmAsked”). Did Ezra really show up to prove his love for Aria, or did he have an ulterior motive?

His sudden appearance at the Halloween train. First Ezra was M.I.A. in Season 3, Episode 13: “This Is a Dark Ride,” then suddenly he was there, after lots of bad things went down. Happy coincidence, or was he on the train the whole time?

His typewriter.  "A" uses a typewriter. Ezra owns one, and during Season 3, Episode 18: "Dead to Me" the camera kept focusing on it. Coincidence, or clue?

CeCe showed up outside his door. We questioned why CeCe was spying on Ezra and Aria in Season 4, Episode 11, but now that we know Ezra and CeCe were working together, it makes so much sense! We know "A" made CeCe return to Rosewood, so maybe she wanted to know what her boss was up to?

His Ravenswood costume. In the Season 4 Halloween episode, we saw him dressed up as a soldier, just like the mysterious person in the gas mask. He definitely had time to change prior to showing up in time to help out the stranded Liars.

"The one Ali fears the most." Ms. Grunwald told Aria, Spencer, and Emily that one of them has been touched by the one Ali fears the most. That could certainly mean Ezra and Aria.

Ali ran away right before Ezra showed up. In the Halloween episode, Ali disappeared right as Ezra appeared at the end. Was she running from him just because she didn't want to be seen, or because he's "A"?

His new lair... in a dark, secluded cabin. When Ezra appeared in the Ravenswood lair, effectively outing himself as "A," we really didn't want to believe it. Who says the lair really belonged to him? Maybe it was all a big misunderstanding! But in the Season 4B premiere, Ezra got a new lair: a cabin out in the middle of the woods. (With it's very own super-creepy trapdoor basement, natch.) If the Ravenswood lair wasn't his, why would he feel the need to get a new one?

His obsession with Ali's diary. Season 4, Episode 15 ("Love ShAck, Baby!") provided plenty of shots of Ezra creepily watching the girls at school as they poured over Ali's diary in search of clues as to where she might be hiding out. Then, when the girls got stuck in the rain and had to take shelter at Ezra's cabin — coincidence? We think not! — "A" swooped in and stole the journal.

Ezra's break-in at Hanna's. Ezra knew full well that Hanna wasn't at home, but he still went over to her house, telling Ashley he was hoping to talk to Hanna about her grades. Then, when Ash had to step into the other room for a phone call, he snuck up into Hanna's room, poked around on her computer, and possibly even sent an email. We're not sure what all he did... but we're absolutely positive that he was up to no good.

The kissing rock. When Emily went to the kissing rock in Season 4, Episode 15 (Love ShAck, Baby!"), we saw that the rock had a pair of initials carved into it: "EF + AD." Now, while we initially assumed "EF" stood for Emily Fields, what if it was actually Ezra Fitz? This means Ezra and Ali did meet that summer, and he could be Board Shorts. Could this be Ezra's motivation for going after Ali and the Liars all along? 

He went into a violent rage outside the Grill. During Season 4, Episode 16 (“Close Encounters”), we saw a side of Ezra we really don't want to think actually exists. The usually charming schoolteacher pulled a total Jekyll and Hyde, going ballistic on a blond woman outside the Grill, yelling that she'd really "screwed up." He even started pounding on her car as it drove away. Jake saw the whole thing and told Aria, effectively exposing Ezra not only as having lost his temper, but as a liar. He'd told Aria he was going to Philly, but had actually been in Rosewood the whole time. Of course, Ezra told Aria that the woman he was yelling at was Maggie's lawyer, but we still don't believe him. Why does Ezra want custody of Malcolm, a child that he has no legal rights to? We're thinking it was all a cover-up, and even Maggie is in on the "A" game. 

Jake's bloody stab wounds. Okay, so Ezra didn't actually stab Jake, but all signs point to him orchestrating it so that would happen. No doubt Ezra was furious to learn that Jake had exposed him. Then, soon after, Jake suffers multiple stab wounds when he kicks a punching bag that has been tampered with in a dangerous way. There are a handful of sharp knives jutting out of it, and Jake gets a deep puncture when he kicks the bag during a training session. There's no proof that Ezra is the one who set up the knives. But really... who else would have had the motivation?

He stalks the girls from inside "A"'s lair... which is located inside his cabin.

Okay, now this one is going to be pretty hard to explain away. In Season 4, Episode 18: “Hot for Teacher,” we learn that "A"'s lair is located under the creepy trapdoor in Ezra's cabin. How do we know this? We see him walk down, sit down at the SAME COMPUTERS "A" has been using to torment the girls, and proceed to scroll through hundreds of creepy surveillance photos he's had taken of them. If there was any question up until now that Ezra has been stalking the girls, this pretty much confirms it.

What do you think? Is Ezra really "A" — or could it still be someone else? Let us know your theories in the comments below.

Rebecca Martin is an Associate Editor at Wetpaint Entertainment and our resident Game of Thrones, Breaking Bad, and genre TV expert. Follow her on Twitter and Google+!