Who Is "The Professor" on The Perfectionists? Breaking Down the Most Likely Suspects

Why She's the Killer:

• We can't help but find it a little weird that Alison leaves her life with Emily behind for a position as a TA. Maybe her move to Beacon Heights University is about more than just being a mentor to young students. Is she secretly working with the professor behind the scenes?

Why She's Not the Killer:

• Not only does she seem to genuinely want to help her students, but she's one of the OG pretty little liars. If she truly is a killer, wouldn't she have done it by now?
• She goes out of her way to help Caitlin, Dylan, and Ava when Dana Booker lists them as suspects for Nolan's murder.
• She is one of the people being surveilled by the professor.