Rusk possessed Lisa long enough to deal with his wife and until Lisa is eventually able to purge him from her consciousness. Walter Bishop posits that, due to heavy radiation exposure, Rusk's energy wasn't completely expended, and thus able to possess Lisa. The team discovers Rusk is on a mission to take revenge on his wife Teresa Rusk, who had him killed. Fringe Division investigates, and it is soon determined that at the same time, a soldier named Andrew Rusk was murdered, making them believe Rusk's consciousness has possessed Lisa. She is taken to an operating room, for organ donation, but just as a surgeon opens her up and is about to remove her organs, she suddenly wakes up and begins screaming: "Six-Eight-Three-Three-Nine-Alpha-Echo-Three-Five-Eight!". While the girl’s mind-bending condition intensifies, Walter dusts off some old lab videos and hypothesizes the unthinkable, sending Olivia and Peter to investigate the bewildering case.Ī seventeen-year-old girl, Lisa Donovan, is declared braindead after suffering from a Cerebral Aneurism and is taken off life-support, expiring immediately. Equally as perplexing as her resurrection is that she is now somehow able to speak Russian and possesses classified information only a high-ranking military officer would know. After a teenage girl is pronounced brain dead, her mother takes her off life support, but when doctors operate quickly to remove her organs, the deceased girl shockingly awakens screaming an alphanumeric code.