BIOGRAPHY - part 3
Walker lost track of Jessie, however, and was unable to remain in control on her own. Bloody Mary resurfaced and became the dominant personality in the mix, continuing her mission to return all the wrongs perpetrated against women to the men who hurt them. Her focus was strong enough to even influence Mary and Typhoid towards this ultimate goal, subconsciously moving them to assist Bloody in her vendetta.
After Bloody Mary killed a man in New York City, she reverted to Mary who was identified as an "eyewitness" to the slaughter by the police. Peter Parker was taking photos for the Daily Bugle and reached out to the seemingly innocent Mary. When she claimed to have just gotten off the bus from Wisconsin, Parker invited Mary home for dinner with him and his wife Mary Jane. Before dinner, however, Mary was triggered after reading about Bloody Mary's spree and retreated so that Typhoid could come out to play. The impulsive Typhoid seemed guided by her other alters' desires. She responded to dinner at the Parkers', only to wreck the place and make innuendos about the state of Mary Jane's marriage. She then traveled to a nearby bar and started beating up the patrons after they responded to her come-ons.
Peter Parker caught up with Typhoid as Spider-Man and they began fighting in the streets. Spider-Man intimidated Typhoid, causing her to run away, instinctively towards Bloody's next victim. When Typhoid collapsed, Bloody Mary arose and tried to complete her latest hit against Jack Morray, a man who murdered two of his previous wives. Spider-Man drove Bloody Mary from her sniper's nest, so she later returned in her other identities. Mary fainted in front of Morray on the street outside his house, leading him to invite her in. She became Typhoid and dropped his guard even further before Bloody Mary emerged to seek vengeance.
Spider-Man tracked her down but his fight with Bloody & Typhoid was interrupted when Morray tried to kill himself, apparently overcome by the weight of his own actions. This surprise resolution provided an opportunity for Walker to emerge and assert control again. She and Spider-Man 
worked together to get her psychiatric treatment. Walker submitted to arrest and incarceration in the Ravencroft Institute for the Criminally Insane, where Spider-Man's friend Doctor Kafka would begin working with her and her personalities. [Spectacular Spider-Man (2nd series) #213-214]
Walker's influence eventually helped stabilize her mind, to some degree. The Mary personalities learned to work together towards common goals, cohabitating with each other in a relatively amicable relationship. They improved so much that they were released from Ravencroft and began living in a halfway house. Walker became a private investigator, taking cases involving mistreated women as a unifying thread for her personas. Mary, Typhoid and Bloody often assisted Walker on her cases, although they still acted independently and didn't always share everything they learned, leaving Walker chasing her own tail at times.
Walker learned that her neighbor Gladice's daughter had been killed while working on the streets of New York as a prostitute. She investigated the murder and discovered a serial killer was 
targeting prostitutes in the area, but the police were covering up the investigation. Walker went to work on the case, with Typhoid going undercover among the girls, while Mary and Bloody pursued leads in their own unique ways.
The case proved to be as bad as they come, with corruption rampant among the NYPD. The first girl was killed by a cop named Racette, who liked to make prostitutes suck on his handgun, only for it to go off in her face. However, the main serial killer was actually the wife of Jack Taranova, a retired police officer who also visited the women on the streets. Jealous of these affairs, the wife was inspired by reports of the first killing and began following her husband, killing each prostitute after he visited them. At least two more prostitutes were killed by another corrupt cop, Richards, who took advantage of the murders to commit copycat killings of prostitutes who refused to give him a cut of their profits. The many faces of Mary couldn't bring themselves to kill another woman it seemed, but Bloody Mary did kill Racette and Richards for the murders they committed. [Typhoid #1-4]
For whatever reason, Walker's persona soon faded, leaving only the trinity of Mary, Typhoid and Bloody. She returned to Ravencroft, only to be later transferred to the Guttman Institute in Long 
Island. Mary reached a breaking point and her personalities made a last ditch effort for dominance. Mary put out an assassination contract on herself, hoping that she could die and in the process kill her other more violent personalities. Typhoid put out word as well, looking for a good old-fashioned jailbreak from the asylum. Finally, Bloody Mary hired the female killer Vamp to stop both of her other personalities' plans.
Deadpool, being the weird guy that he is, accepted both Mary and Typhoid's contracts, not realizing they were from the same woman. He figured he could free the woman, collect a fee and then kill her for a second fee if she turned out to be annoying. On scene, he was attacked by Vamp so that Bloody could stop Mary and Typhoid from getting what they wanted. When Deadpool refused to kill Mary or let her kill herself, her personality "died," fading completely from the collective subconscious. The same happened to Bloody Mary when Deadpool and Weasel defeated Vamp, ruining her plans. This left only Typhoid Mary active and eager to escape with Deadpool. [Deadpool (2nd series) #6]
Unfortunately for Deadpool, Typhoid didn't actually have any money to pay him. She tried to kill him instead, but Deadpool wasn't impressed. He decided to bring her to Patch at Hellhouse, his mercenary dispatcher and collect his fee out of the payment Typhoid received from doing other jobs. Deadpool and his rival T-Ray got into a pissing contest at Hellhouse and, when Mary got 
involved, Deadpool accidentally backhanded her out a window. This reawakened Mary's long-buried memories as the prostitute Lyla and the fate she suffered back then. In a moment of clarity, Typhoid recognized the masked intruder from the brothel as a young Matt Murdock. She fixated on paying Daredevil back for that forgotten incident. [Deadpool (2nd series) #7]
In New York City, Typhoid Mary tried to draw Daredevil out by settling old scores, killing the judge who once sentenced her to an asylum and the psychiatrist who had been treating her. Deadpool helped Mary lure Daredevil to a club where she was attacking some of her old mob connections. She disabled Daredevil with a speaker system and tried to blame him for the rise of Typhoid, claiming Mary only fully fractured and became a killer after the window incident. Daredevil was relieved to learn he had never killed "Lyla" but refused to be blamed for Typhoid's actions. Deadpool knocked Mary out and absconded with her before she could take any further revenge against Daredevil. [Deadpool / Daredevil Annual '97]
A cold-hearted mercenary from the start, Deadpool had recently begun to swing towards heroism thanks to the influence of Theresa Cassidy, Siryn. He naively believed he could be the same sort of influence on Typhoid. Instead, Typhoid Mary was furious at Wade for stopped her from killing Daredevil and she decided to disabuse him of his illusions. She escaped from Deadpool and promised to kill a civilian every 15 minutes unless he stopped her. Typhoid killed several men before Deadpool cornered her in a bar, mocking Wade for not taking her seriously and cracking jokes instead of saving lives like a real "hero" would. Typhoid's goading finally pushed Wade into beating her senseless, a savage display of violence that even left the civilians he was protecting more scared of Deadpool than they were of Typhoid. [Deadpool (2nd series) #8]
Typhoid gave Deadpool some space after that, while she healed and continued doing jobs out of Hellhouse. Zoe Culloden, the Expediter for Landau, Luckman & Lake, was trying to recruit Deadpool for a greater destiny and saw Typhoid as a toxic impediment. She intended to take Mary out of the picture, but instead left behind her datapad at Hellhouse when she teleported out for another call, inadvertently leaving Mary LL&L's collected information on Deadpool and Siryn.
Deadpool was spiraling on his "hero's journey," in large part due to Mary's actions and he desperately wanted Siryn to reassure him and course-correct his path. His heavy-handed 
approach led to a conflict with Siryn and her friend Warpath, however, leaving Wade alone and even more distraught than before. As he got drunk and drowned his sorrows, Typhoid approached him disguised as Siryn, using an image inducer. She claimed to have changed her mind and forgiven Wade and confessed she had finally come to love him as much as he loved her. An overwhelmed Deadpool made love to "Siryn" that night, only for Mary to cruelly snatch away his happiness the next morning by revealing her true identity. The shattered and heart-broken Deadpool got into a fight with his nemesis T-Ray that day and was beaten nearly to death. Typhoid Mary used the reprieve to abandon Deadpool and Hellhouse, getting out of the spotlight in case Deadpool eventually recovered and came for her. [Deadpool (2nd series) #12-14]