Gerard speculates Kimble has returned to Chicago to search for the one-armed man. Gerard spots Kimble at Chicago City Hall, who is there to investigate a jailed man on his list. Kimble barely escapes and disappears into the St. Patrick Day's parade. Kimble later breaks into Frederick Sykes' residence, who is another amputee on Kimble's list. Kimble recognizes Sykes' photo as his wife's murderer. Sykes, a former police officer, handles security for Devlin-MacGregor, a pharmaceutical company that is 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 Food and Drug Administration approval. Kimble and a colleague deduce that Dr. Nichols, who led the drug's development and will profit from sales, arranged a cover-up by falsifying the findings to get Provasic approved, and had Sykes commit the attack that killed Helen (which was actually intended to kill Kimble), and presumably to also kill Dr. Alec Lentz, who also worked on the development, to help falsify his research. Before leaving Sykes' house, Kimble phones Gerard, intending the call be traced.