Alright so here is the theory after watching 3x13 This Is A Dark Ride.
So first of all twin theory. First of all that little girl..She was really creepy, she mentioned something about her sister and her always fighting even over there dolls. If you remember last years halloween episode Ali told the story of the twin. (They fought and one tried to kill the other one over dolls and got sent to a mental hospital, but 'escaped'). So what if the one twin died and that was the ghost that was at Hannah's house? Creepy Much. I think that that would make the most sense. I know this theory has been around for along time but this just supports it further more.
Also Garrets flashback with Ali.. I think i believe him. He doesn't have a reason to lie and he got killed because he knew to much. I think he was going to tell Spencer everything that happened. But no A had to kill him. I think that he wanted Jenna to be love that he killed Ali. The question is but why? And why didn't he tell the police what happened? BECAUSE BYRON WAS THERE. I don't think that he killed her though. I think that him and Ali had an affair. Thats why the eating that Aria and Ali found in Byron's office wasn't meredith's. It was Ali and she was trying to cover up her tracks. That's why she wanted to tray Byron's office because she was mad that he was also having an affair with Meredith.
I think i know who could have been behind the 'fake Caleb'. I'm almost sure its Mona. First at the end of the episode you get to see the mask that that the person was wearing beside Mona's bed. Like hello she could have been it. Now if you watch the PDS episodes the seventh one is where A breaks into the store. She pets the blond wig and Cece. Did Mona have a thing for Hanna? or even for Ali? I think it was Mona who broke into the Halloween store but how is she getting out of Radley?
Then there was TOBY. I LOVE TOBY but he's so evil now! He definitely knew what Ali's body was in the ice bucket. And when he was hugging Spencer he gave the evilest look over his shoulder. It could be cause Garret was just there or does he really love Spencer? Also i think it might have been him who was trying to push off Aria and DEAD Garret off the end of the train. I don't know though because I still think Toby isn't completely evil so did he maybe not know Aria was in the box.
Finally the hand. According to Andy Reaser it was a flashback. So was this later on the night Ali died? was it her trying to escape?!
Inbox Me Your Theories And Thoughts, xoxo