prisoners escape from the Fox River State Penitentiary, Mahone leads the investigation to capture them. Reviewing their files, he decides to concentrate his efforts on Michael Scofield, mastermind of the breakout. He tracks the escapees to Oswego, Illinois, but they manage to escape. Mahone continues to pursue Michael and his brother Lincoln Burrows (Dominic Purcell), who are able to avoid him on several occasions. While investigating a car explosion Mahone is shown to have a drug problem, swallowing pills concealed in a pen. Mahone eventually tracks down John Abruzzi (Peter Stormare) and David "Tweener" Apolskis (Lane Garrison). Mahone orders his men to shoot Abruzzi to death when he fails to surrender, and later murders Tweener in cold blood. When he returns to his office, Mahone is questioned by Internal Affairs Agent Richard Sullins (Kim Coates) about their suspicious deaths. It is revealed that Mahone was being blackmailed by Paul Kellerman (Paul Adelstein), a Secret Service agent forced to work for the Company. Kellerman threatens to reveal that Mahone killed Shales, and forces him to kill all the escapees in exchange for his silence. Although hesitant, Mahone agrees when an operative of the Company, Agent Kim (Reggie Lee), threatens to murder his family. Mahone continues his hunt for the remaining six escapees but is betrayed and shot by Kellerman, who transfers his allegiance to the brothers. He survives and decides to stop chasing the escapees, but is forced to resume his search when his son is injured in a car accident orchestrated by one of Kim's agents. Before returning to work, he murders the agent who arranged the accident. Mahone returns to his FBI field office, where he is informed by Agent Wheeler (Jason Davis) that Internal Affairs is investigating him. When Charles "Haywire" Patoshik (Silas Weir Mitchell) murders a civilian, Mahone asks Brad Bellick (Wade Williams) (former captain of correctional officers at Fox River) to help him find Haywire. Bellick finds Haywire, chasing him up a grain mill; Mahone climbs the mill and talks Haywire into committing suicide. Mahone's next target, Benjamin Miles "C-Note" Franklin (Rockmond Dunbar), narrowly evades him; C-Note soon offers to turn himself in, however, if his wife and child are cared for. C-Note is taken to jail, and Mahone tells him to commit suicide in order to guarantee the protection of his family. C-Note attempts suicide, but is rescued by the guards. Sullins makes a deal