About

is currently a member of the Bioterrorism Security Assessment Alliance, of which she is a co-founder and one of the original eleven members,[citation needed] making her a respected and high ranking operative of the organization. Prior to this, she was a member of S.T.A.R.S. Alpha team and during this time, she survived the infamous Mansion incident and the Raccoon City outbreak. She is the long time partner of Chris Redfield and as a result of their partnership the two are very close. She has devoted almost her entire adult life to stopping bioterrorism and hated enemy, Albert Wesker.

Mansion Incident
On the night of July 23 1998, the S.T.A.R.S. Bravo team was deployed to the Arklay Mountains located on the outskirts of Raccoon City after evidence of grisly, cannibalistic murders. Alpha team was sent to find out what happened to their comrades when communication with Bravo Team was lost only minutes later. Soon after their arrival, the team found the smoking, yet still intact, remains of Bravo Team's helicopter, where they found the mauled remains of the Bravo Team's pilot, Kevin Dooley. After witnessing the death of fellow Alpha Team member Joseph Frost, who was torn apart by a group of Cerberus, the team was abandoned by their helicopter pilot, Brad Vickers, and the remaining members fled to the nearby abandoned Spencer Estate.

Jill and Barry began searching around the Mansion; its adjacent residence and underground tunnels before reaching a laboratory under the mansion. By this time, Jill had become suspicious of Barry, and believed him to be hiding something from her.

They were picked up by Brad and were able to leave the Spencer estate before it was completely annihilated.

Raccoon's destruction:
After their return to Raccoon City, S.T.A.R.S.'s requested for a full-scale investigation of Umbrella's activities was denied by their superior, chief Brian Irons of the Raccoon City Police Department. With no support from the American government, Chris; Barry; Jill and Rebecca decided to travel to Europe and investigate Umbrella themselves. Chris went ahead and traveled to Europe by himself by the end of August, while Barry went to Canada to relocate his family first. Jill decided to stay in Raccoon City in order to investigate the whereabouts of Umbrella's underground facility before joining her comrades in Europe.

However, two months after the mansion incident, her investigation was ruined when Raccoon City was infested with the t-virus. On the night of 27 September, Jill left behind her apartment for her last escape attempt as the undead monsters had already ruined the city. Firstly, she took shelter in an abandoned warehouse where she met Dario Rosso, an aspiring novelist who had recently lost his daughter to the undead. Jill tried to get Dario to help her escape, but he refused to go outside with the undead. He then locked himself inside a cargo and waited to die.

While searching for escape routes through the streets of Raccoon City's uptown district, she met Alpha team's pilot Brad Vickers in Jack's Bar, who had been bitten by a zombie in front of her. Jill was warned by him about a monster that he had encountered and escaped from. He stated that this creature was looking for S.T.A.R.S. officers. Jill made her way to the Raccoon Police Department as she witnessed the death of Brad at the hands of Nemesis T02 - the monster that Brad warned her about earlier.

Jill managed to thwart Nemesis temporarily and went inside the RPD to hide. As Jill went inside the RPD, she only explored parts of RPD because some rooms, including the east wing office, was solidly barricaded. With surviving police officers barring off the east wing, Jill was left checking the almost survivor-less west wing - the only survivor being an unconscious Marvin Branagh, whom she believed was dead. At the evidence room, she retrieved a Raccoon City Hall key (in the guise of a gemstone) and the S.T.A.R.S. Office key that only can be retrieved by using Brad's S.T.A.R.S. key card, which found on his corpse, or by using her old S.T.A.R.S. key card, which found on the west wing operation room. Jill headed towards the 2nd Floor west wing to unlock the S.T.A.R.S. office by using the key. At the S.T.A.R.S. office, she retrieved her lockpick and also received an audio message coming in from a man named Carlos, who had lost contact with his platoon. While preparing to leave, Nemesis-T02 broke out from the window and showed up again as Jill managed to fend herself and to get back to the office; however, Marvin was mysteriously gone. With the Nemesis-T02 already in the station, Jill left the abandoned police station and went on search of Carlos - Brad's body having mysteriously disappeared.

While running away from the Nemesis, Jill headed her way to the Raccoon City downtown district where she encountered dead bodies of mercenaries. She met Carlos Oliveira, a surviving member of the Umbrella Biohazard Countermeasure Service, either at the Grill 13 Restaurant or at the Raccoon City Press. Jill was finally able to open the doors of city hall, which was also overruns by those undead monsters, and headed her way to the cable car station, where she met Carlos again along with Nicholai Ginovaef and Mikhail Victor.

Nicholai said that using this cable car would have a chance to get to the downtown district for the awaiting chopper to safety; However, Nicholai did not reluctantly trust Jill due to a "reason". The cable car was not working so Jill find ways by looking things that would help in starting the engine. She visited Stagla Gas Station, the City's Power station where she encountered Nemesis again and the Sales Office near the Bar Jack. At the Umbrella sales office, she witnessed the fate of the Murphy Seeker, an infected UBCS mercenary who was killed by his colleagues moments after Jill entered the office.

She revisited the warehouse to check on Dario, who she found dead near zombies that had already invaded the warehouse. Jill went back to the cable car and fixed the engine. The engine started and they were ready to travel towards the far clock tower.

Suddenly, the Nemesis tracked them down and started to attack. Mikhail gave his life in protecting Jill and Carlos from Nemesis by suicide bombing and the cable car accidentally started to collapse. Jill and Carlos ended up in the nearby St. Micheal Clock Tower after their cable car collided off-course and Nicholai was presumed dead after an accident. Jill took shelter inside the clock tower while running away from the Nemesis and saw Carlos who also survived. Jill managed to fixed the tower's clock for an alarm in order to signal the awaiting chopper for rescue. However, Nemesis showed up and blasted the awaiting helicopter by using rocket launcher, thus preventing Jill to escape. Jill faced Nemesis again in a battle outside the Clock Tower where she was quickly infected with the t-virus after the attack by Nemesis' tentacles. Carlos helped Jill in the battle but Nemesis overpowered him. Carlos laid unconscious on the floor while Jill took the last turn in defeating Nemesis. Jill felt tired and laid unconscious as Carlos finally awoke and saw her. Jill was brought by Carlos inside the clock tower's chapel where she laid there in a semi-coma.

Jill remained unconscious at the Clock Tower's chapel between September 29th and 30th, and was guarded by Carlos. On the early hours of October 1st, Jill regained consciousness and told Carlos that she has been infected by the virus. Carlos forced himself to search for Jill's cure or else she might become one of the undead. Jill also said to Carlos that if she turned into a zombie then he would not hesitate to kill her. After Carlos returned from a trip to the Raccoon General Hospital to find the vaccine, Jill was administered with the serum by Carlos and fully recovered. She was warned by Carlos that Nicholai was still alive and that she should not trust him. Jill continued her search for escape.

Soon afterwards, she discovered another one of Umbrella's B.O.W. processing plant hidden behind a park. In this lab, she confronted Nicholai for the last time and fought with Nemesis once again. Jill was warned by Carlos again through radio transmitter about the presence of nuclear missiles that would destroy Raccoon City. While she was rushing, she faced the fully mutated Nemesis in a final battle and successfully destroyed Nemesis with a top-secret weapon that was transported to the facility a few days earlier. Finally, Jill, together with Carlos, escape the city by a helicopter piloted by Barry Burton, who had come back from Canada to rescue his comrade. As they flew away, Jill witnessed the annihilation of Raccoon City by nuclear missiles on the order of the U.S. government. Jill and Barry would go on to become involved in various anti-Umbrella groups and activities until Umbrella's closure.