Maggie Lowe

Maggie Mags Lowe is the main antagonist of the episode Somebody's Watching in Criminal Minds.

Biography
Not much is known about Maggie, besides her having gone to Lila Archer's friend and attending the same college as her, and sharing the apartment with her after the heat in the apartment was cut. And what happened this weekend is only suggested by Lila (who may have been caughy up in her own illusions and therefore may have provided false information), but in fact Maggie developed a homosexual fascination for Lila and obsession, and when Lila became an actress, Maggie became Lila's production assistant. And somehow, Maggie killed Wally Melman a producer who turned down Lila in a role, and then killed Chloe Harris an actress she saw as Lila's rival, but in months Lila was unaware of the activities and the acts committed by Maggie.

Somebody's Watching
The episode begins when Maggie first kills Natalie Ryan with a shot to the forehead and then when producer Jeremy Collins arrives she kills him as well. With that BAU is called, and Gideon and Reid find Detective Owen Kim who tells them that two other murders also occurred similar to the current murder, and that the victims were actresses and producters, and with that Gideon agrees to participate in the case. After Gideon is informed that another Lila had received not only threat but also present, the team then realize they are dealing with a stalker. Reid later notices a strange work on the wall and realizes that it is a jagged collage of Lila's life, she then explains that her producer had given it to her. The team then puts him on suspicion of being the stalker, only to reveal that he has received the work of Maggie, Lila's production assistant, and with that they realize that Maggie is the killer. And this is confirmed when in a conversation between Reid, Lila and Garcia, they hear a knock on the phone by Maggie, Reid asks how she came in, an Lila replies that she has the keys, Reid soon hatched the gun to look for her, and Maggie points her gun at Lila, while Reid doesn't shoot, Maggie says she would never hurt because she loves her, Reid then replies that Lila doesn't love her back, Maggie then claims she and Lila kissed in the pool, Maggie pushes Lila and turns the weapon for Reid, which Reid disarms her, Maggie says to kill her, but Reid says they can get help, and Maggie is has been institutionalized.