Zombie Baby Doll Stalker

The zombie first appeared in "The First Secret" and later appeared in the Webseries "Pretty Dirty Secrets" and the season 3 Halloween episode " This Is A Dark Ride".

In "The first Secret" Alison is seen trying to find a costume for Noel Kahn's Halloween bash. While doing so, someone picks up the mask and looks at it. Latter after Alison meets Jenna Marshall, the Zombie is standing behind her. Alison then yell "FREAK"

Later at Spencer's house, all of the girls are getting changed as they spot Zombie outside. When Alison goes to see, he's gone. Aria, Emily, Hanna and Spencer later spots the same costume at the party

When they go to find Alison at the abandoned house, she says that the zombie grabbed Alison but she got away. When Alison goes to get a signal in the hallway Zombie attacks and tries to stab her but she gets away. Alison then reveals that it was Noel

At the party, Someone in the zombie costume runs behind Alison and say "Bitch" and is revealed to be Lucas Gottesman, but is he the one that attacked Ali? Then Noel comes by and says it wasn't him because he had to drive with his brother. After Ali gets a text from A, there is a bunch of zombies standing there. One hangs up the phone and takes off the mask but the identity is not revealed.

In "Pretty Dirty Secrets" after Lucas talks to Shana, the zombie returns and whispers something to Lucas and goes behind a red curtain. Lucas hands over an envelope and then Lucas walks away

In "This is A Dark Ride" Hanna and Aria spots the zombie at the brew before boarding the Halloween Ghost Train. aria assures Hanna that it's just a costume it doesn't mean anything. The zombie is later seen whe Spencer is by herself and drags her away, and is revealed to be Garrett Reynolds. No one is sure if he was the one that attacked Alison because there were more people in the same costume.