Twenty-two years after the body of God's Banker, Roberto Calvi, was found hanged under London's Blackfriars Bridge, his death remains a compelling mystery. But with four people facing a murder trial in Italy, his son is hoping for an answer at last. The death of your father is always going to be traumatic. But for Carlo Calvi the tragedy has been made worse by political intrigue, shady business practices and tales of mafia connections. An original inquest into the death of Roberto Calvi, who was found on the morning of 18 June 1982, returned a verdict of suicide. But his...