Mona's Kidnapper

Mona's kidnapper is an anonymous character that we possibly know. At first, the viewers were supposed to think that this person was Mona's killer. The character has blonde hair that may or may not be a wig and appears to be brutal as the Vanderwaal household is in shambles and blood stains are left all over the place, though it is later revealed that Mona splattered blood on the walls in an attempt to fake her death. The hair changes between scenes may be a clue that there were at least two people breaking into Mona's house. It was revealed in Pretty Isn't the Point that Mona and 'A' were going to fake her death and blame it on Alison; however, Mona planned to double cross 'A' and get answers on their identity, then come back to town and free Alison, becoming a hero. It was believed that 'A' double crossed Mona and killed her for real, but in Welcome to the Dollhouse it is revealed that Mona is alive and being held captive by 'A'.

Possible Identities

 * CeCe Drake
 * Sydney Driscoll
 * Paige McCullers
 * Cindy
 * Mindy
 * Melissa Hastings
 * Lesli Stone
 * A (Charles DiLaurentis)
 * The Black Widow

Eliminated Identities

 * Hanna Marin
 * Aria Montgomery
 * Emily Fields
 * Ezra Fitz
 * Leona Vanderwaal
 * Alison DiLaurentis
 * Jenna Marshall
 * Spencer Hastings
 * Toby Cavanaugh

The Kidnap
In Taking This One to the Grave we see someone with a blonde wig that looks like Alison's hair breaking into Mona's house, going up the stairs. After that, we see another anonymous person, but with a straight blonde wig going into her room and Mona sees Him or Her.

In Through a Glass, Darkly a hidden camera is found showing a part of the fight between Mona and the same anonymous attacker who got into her room. She or He appears to push her down the stairs, jump down and try to kill her. The murderer put Mona's body in a trunk. Spencer mentions in Through a Glass, Darkly that there were traces of Mona's DNA in Alison's trunk and Carla Grunwald says she feel Mona is surrounded by earth, insects and cold and is not having an easy passing. In this episode, Alison is being arrested and put in jail for Mona's murder, the girls are not so sure that Alison killed Mona after A keeps terrorizing them while Ali is in jail.

In Pretty isn't the Point, we find out that Mona and Big A were planning to fake Mona's death so that Ali would be locked up. Mona planned to come back to Rosewood after she finds out who A is so that the girls will be safe and Ali will be out of jail. She took her own blood and that is probably the reason she fainted in A Dark Ali. She was supposed to meet Mike Montgomery a few times but she never showed up. Mike thinks A double-crossed Mona and killed her. In Welcome to the Dollhouse, it is revealed that Mona was never murdered and is being held captive in A's dollhouse. The attacker never tried to kill her, they were trying to drug her and take her to the dollhouse. However, the reason that the assailant entered Mona's home and kidnapped her remains unknown.