By following the contact information on Noone, McCaleb and Jaye Winston find the Code Killer's files, which prove that he had deliberately killed three people to get McCaleb a new heart. Although McCaleb is thus cleared, the fact that Gloria's death was directly due to his illness creates a rift in his increasingly personal relationship with Graciela and her nephew Raymond, Gloria's son. McCaleb, who is still supposed to be inactive, secretly continues to trace the Code Killer from information that he learned during his interview with "Noone" and drives to a location in Baja California that matches one Noone described. He then finds and is overpowered by the Code Killer, who tells him that he has kidnapped Graciela and Raymond and buried them alive. Despite serious medical problems from so much activity, McCaleb is able to kill him and then uses the little information he has to locate and rescue Graciela and Raymond. Upon his return, he apologizes to his doctor and says that he went to Mexico because he needed a vacation. Only Jaye Winston among the law enforcement officials figures out what really happened.