"Madero" was an alias assumed by Dr. Luis Nivara after he fled the United States and settled in San Macros, Mexico. In the States, he was indicted by a grand jury for insurance fraud because of testimony from Adrian Monk, although he and Monk never actually met each other due to it being a grand jury trial. Nivara lost his medical practice, and his wife committed suicide in humiliation. Nivara jumped bail and fled to Mexico, where he adopted his alias and became the coroner for the local police.