ambulance and is nearly captured by the marshals in a highway tunnel but slips down a storm drain. Gerard follows and corners Kimble at the edge of a spillover above a dam; Kimble proclaims his innocence, Gerard responds that he doesn't care, and Kimble leaps into the water below, escaping. Kimble returns to Chicago to hunt for the real murderer, acquiring some money from his friend and colleague, Dr. Charles Nichols. He rents a cheap apartment and assumes the identity of a janitor to infiltrate Cook County Hospital's prosthetic department, where he lists names of male patients with prosthetic arms matching the killer's. While there, Kimble changes the medical orders for a young trauma patient who was misdiagnosed, saving his life. Kimble escapes after a suspicious doctor confronts him and alerts the police. Speculating that Kimble has returned to Chicago to search for the one-armed man, Gerard spots Kimble at Chicago City Hall, where he is investigating a jailed man on his list. Kimble barely escapes the ensuing chase and disappears into the St. Patrick's Day parade. Kimble later breaks into the residence of Fredrick Sykes, another man on the list; seeing a photo of Sykes, Kimble recognizes him as his wife's murderer. Sykes, a former police officer, handles security for Devlin-MacGregor, a pharmaceutical company releasing a new drug called Provasic. Kimble had previously analyzed the drug's test samples and discovered it caused liver damage, which should have prevented FDA approval. Kimble deduces that Dr. Nichols, who led the drug's development and has just become a board member of Devlin-MacGregor, arranged a cover-up by falsifying the findings to get Provasic approved. Nichols arranged for Sykes to kill Kimble in a staged burglary, only for him to be surprised by Helen, resulting in her death. He also presumably had him kill Dr. Alec Lentz, who also worked on the drug's development and discovered its potential damage. Kimble phones Gerard, who conducts his own investigation into Sykes and Nichols, starting to doubt Kimble's guilt. Kimble then heads to a hotel conference where Nichols is presenting Provasic. Sykes is alerted that Kimble is in Chicago and arms himself to kill him. Sykes tracks down and attacks Kimble on an "L" train. In the struggle, Sykes fatally shoots a transit cop before Kimble subdues him and handcuffs him to a pole. Unbeknownst to Kimble, the officer's death is assumed to be his fault, and