Martin's investigation leads him to Mexico City, to a millionaires' mansion, of the Prado Castelo family, who own one of the most important jewelry companies in the country.

Little does he know, like Verónica, they are actually victims of Virginia Padro Castelo, an evil and ambitious woman whose angelic face hides a wicked spirit.

When Martin discovers the truth, everything will seem lost as Verónica abandons him because of his distrust and will be left looking the fool for believing people who only have bad intentions.

[11] As of April 20, 2015, Canal de las Estrellas is broadcasting Lo imperdonable weeknights at 9:25pm, replacing Hasta el fin del mundo.

Univision aired Lo imperdonable in the United States on May 18, 2015, weeknights at 9pm/8c replacing Hasta el fin del mundo.