Now that fans of "Pretty Little Liars" know that Toby (Keegan Allen) is "A," it's only a matter of time before the girls make the discovery, too. Such a big reveal can only mean that more drama is headed to Rosewood, but when? And who will be the first to find out the truth? Let's take a look at which pretty little liar could be the first to discover Toby's betrayal.
SpencerWith Spencer (Troian Bellisario) being Toby's girlfriend, she should be the most obvious person to spot the signs. Not only has she been dating him for a long time, she is by far the smartest of the four girls. She is usually the one to piece the clues together, and while she often jumps to the wrong conclusions, she nearly always gets it right in the end. The problem in this case is that Spencer is head over heels in love with Toby. She probably wouldn't even believe him if he outright told her what he'd been doing. It would be amazing if Spencer was the first to find out Toby's secret because the resulting fireworks would be huge. However, she is too close, so the chances are quite slim.
HannaHanna (Ashley Benson) is often considered the ditz of the group, but she isn't nearly as dumb as she is sometimes made out to be. In fact, when her friends are in danger, she can be very quick thinking. Even with all of that in mind, it's hard to imagine how she would be the first to find out what Toby has been doing. She has no close connection to him, and unless she accidentally sees him doing something, it doesn't seem likely that she will be the one. Knowing how clever Toby has been so far, it pretty much rules Hanna out of the equation.
AriaAria (Lucy Hale) is probably the second most astute of her friends, behind Spencer. She is also highly preoccupied. Not only is she still trying to get her parents to accept her relationship with Ezra (Ian Harding), she is now harboring a huge secret for his ex-girlfriend, Maggie (Larisa Oleynik). On top of that, she's juggling school work, getting used to her mom's new relationship, and trying to keep "A" from further hurting her and her friends. She just doesn't have the time to spot the signs that Toby is the one she's hiding from.
EmilyEmily has been through so much at the hands of "A." She's been drugged twice: Once resulting in her ending up in the hospital and losing her place on the swim team, and the other time ending up at Ali's (Sasha Pieterse) grave with a shovel in her hand. Not only that -- her first love, Maya (Bianca Lawson), has been murdered. Emily used to date Toby, and the pair have remained close friends. Her ties to Toby might just make her the primary possibility to discover who he really is.
Whichever one of the girls is the first to figure it out, it's sure to lead to some crazy and dangerous consequences. There has yet to be a major death among the main characters. Would Toby go as far as to kill to protect his secret?