In "Pretty Little Liars," there have been a lot of suspicious characters. Some started out seemingly innocent, and others were questionable from the start. One of the most curious characters is Dr. Sullivan (Annabeth Gish). She entered the show as a therapist for the girls, but things got weird when she figured out who "A" was. Although she came through for the pretty little liars at the end of Season 2, is she really trustworthy?
Dr. Sullivan had been treating "A," and she eventually figured out the truth -- that Mona (Janel Parrish) was the one who had been tormenting the girls. Dr.Sullivan called Emily (Shay Mitchell), and asked her and her friends to come to her office, but when they got there, she was gone. She later faked her own death, with "A" giving the liars the impression that their therapist had been buried alive. "A" lured the girls to the "burial location" and told them to dig to save Dr. Sullivan's life. As it turned out, Dr. Sullivan was just fine, and was later seen telling "A" that she'd done everything she'd been asked to do.
At the end of Season 2, Dr. Sullivan explained that the reason she went along with Mona's scheme was because she'd threatened her son. But is this a satisfactory reason?
It's kind of hard to imagine that someone as tiny as Mona could "kidnap" a fully grown woman, then force her to do something so awful as to fake her own death. Either she had a lot of help, or Dr. Sullivan went along willingly.
As someone who had experience dealing with teens and their issues, she should have been equipped to handle Mona without getting involved in her games, so why play along? Unhinged as Mona is, Dr. Sullivan should have been able to outwit a 16-year-old with ease.
There is also a case for Dr. Sullivan being Toby's (Keegan Allen) mom. Mona made a lot of threats towards Toby, and Dr. Sullivan said her son was being targeted. This could just be coincidental, but how else would Toby have found her when she had fallen off the radar?
Dr. Sullivan might not be the enemy, but there is definitely cause to question her actions. There is no obvious motive for her to want to attack the pretty little liars, and an adult trying to sabotage teenagers sounds completely unrealistic. However, there is something about the way she handled the situation with "A" that casts a strong suspicion over her.