At the homecoming dance, Melissa reminds the attendees to buy raffle tickets for a car, which gets a nice product placement, and Hanna walks in with the file and Lucas. She tosses his jacket at him and gives him a big hug, and he looks stunned. Aria and Spencer run over to her, as Melissa announces that Sean and Hanna are homecoming king and queen. But Hanna walks off leaving Sean to get crowned alone. She tells the girls about Toby's file and says that Jenna was just there for the one session so the therapist could ascertain how she felt about Toby returning home. The dates prove that he wasn't away at school when Ali disappeared.

We flashback to the night of "The Jenna Thing" and now we hear what Ali and Toby were talking about. She claims he's been peeping in her window for years, and he insists they haven't, and then she says she peeped in his and says if he tells anyone the truth she'll reveal that he has a Cruel Intentions style relationship with his step-sister. They think it is enough to want Ali dead. That, and because she was a heinous blackmailing bitch. They immediately worry about Emily, and Toby tells her not to answer the phone since he wants to tell her about last summer. He wants her to hear it from him. The girls frantically text, and when they leave to find her, we see that Jenna is sitting there amidst all the mirrors. The text says that she's with Ali's killer, and when she tries to get away from him, she pushes him into some chemicals. When she does, she sees his tattoo. This causes her to run away, through the hall of mirrors, screaming, and then trips and falls. We see the town marker sign that proclaims, "You are now leaving the Town of Rosewood. Population: 7988" And a shadowy gloved figure spray paints out the final eight and takes some white paint and puts a seven in its place. Now that's what I call a cliffhanger. Totally makes up for last week's lackluster ending. And this was definitely my favorite episode to date.

See how this show compares to Gossip Girl, and if you're not afraid of spoilers, read our list of the best moments of PLL's first season!