 Some conspiracy theorists connect the death of John Paul in September 1978 with the image of the "bishop dressed in white" said to have been seen by Lucia Santos and her cousins Jacinta and Francisco Marto during the visitations of Our Lady of Fátima in 1917.In a letter to a colleague, John Paul had said he was deeply moved by having met Lucia and vowed to perform the Consecration of Russia in accordance with her vision.David Yallop's 1984 book "In God's Name" proposed the theory that the pope had been in "potential danger" because of corruption in the Vatican Bank (known officially as the Institute for Works of Religion or "Istituto per le Opere di Religione"), the Vatican's most powerful financial institution which owned many shares in Banco Ambrosiano.