In "The Bullet That Saved the World", Etta is killed by Captain Windmark, but she is saved by the season 5 finale of resetting the time line. Mitchell Loeb Mitchell Loeb (portrayed by Chance Kelly) is an FBI agent, and a member of the bio-terrorist organization ZFT, as led by David Robert Jones. Loeb originally appears as a loyal FBI agent attacked by a lethal parasite that threatens to slowly kill him. Walter is eventually able to kill the parasite, thanks to the information given by bio-terrorist David Robert Jones. However, it is soon shown that Loeb and his wife are in fact secretly working for Jones. Putting together Walter's untested teleportation device, stolen from several individual safe-deposit boxes, and using a mathematical equation and a device that allows him to temporarily disrupt the particles in a solid object and pass through them, Loeb is eventually able to teleport Jones out of the prison, freeing him. With Jones out of the prison, Loeb—still working for the FBI—abducts Olivia on behalf of Jones. Olivia is however able to escape, but begins suspecting that Loeb was the one who kidnapped her. While paying a visit to Loeb's home, looking for anything to support her suspicions, Olivia gets into a gunfight with Loeb's wife Samantha, killing her. When Loeb eventually learns about his wife's death, he confesses his involvement with Jones, and is incarcerated. Sanford Harris Sanford Harris (portrayed by Michael Gaston) was originally a high-ranking officer of the United States Marine Corps. He is a close friend of Phillip Broyles. One evening he got drunk and sexually assaulted three female Marine privates; a crime for which he was exposed and prosecuted by Olivia, resulting in several years of imprisonment. The conviction was later overturned, but Harris' career was ruined. Harris then joined the Department of Homeland Security, rising in rank to become a high-level consultant for the Pentagon. He is called in to audit the procedures of the Fringe Division, and puts a clear emphasis on Olivia's actions. As his position makes him her superior officer, Olivia does her best to humor him. Harris is eventually exposed as a ZFT operative during an investigation of two pyrokinetic women. Olivia tracks Harris during his abduction of the second woman and is locked in a room with her. With her out-of-control powers, it was expected that Olivia would be vaporized when the woman exploded;