In Buenos Aires 1996, a Communion Host bled and became living human heart. Ron Tesoriero, lawyer, led the scientific investigation asked for by Pope Francis when he was Archbishop. Journalist Mike Willesee, who worked with Ron, remarked, "When a Communion Host which is bread, bleeds and becomes living human tissue, it is not just a 'wow' moment. It is a traumatic day for Science."

In his new book, Ron provides the basis for his claim that the Eucharistic Miracles of Buenos Aires will prove to be one of the most significant events in the history of Christianity.