text: Tony is transported to CTU Medical, where he undergoes surgery and is stabilized. Later, an assassin infiltrates CTU, impersonates a doctor and lures Jack down to medical by claiming Tony has awoken. Jack manages to foil the attempt on his life. Upon actually waking a few hours later, Tony is not aware that Michelle has died. Having been advised by the doctor that Tony should be kept calm, Bill Buchanan tells him that Michelle's condition is still unknown. However, Tony suspects otherwise and escapes CTU Medical to access a computer, where he learns of his wife's fate. Bill later informs him that CTU have discovered Christopher Henderson to be involved in the murder.
  Tony ends up sealed inside CTU Medical along with Henderson when terrorists release Sentox nerve gas into the building, killing many members of the staff. Enraged and feeling he has nothing left to live for, Tony decides to kill Henderson by injecting him a lethal dose of hyoscine-pentothal while he is seemingly in a coma. Jack's attempts to dissuade him eventually cause Tony to hesitate, however, and Henderson is given time to disarm Tony of the syringe and inject him with it before escaping. Before Jack can get him medical help, Tony apparently dies.