Rome, May 13, 1981, 17:00. Pope John Paul II crosses St. Peter's Square in an open Jeep, among thousands of cheering people. Suddenly, three shots ring out across the square. The Pope collapses. The attack, which was described as the "crime of the century", launched an unprecedented investigation that brought about more questions than answers.

Rome, May 13, 1981, 17:00. Pope John Paul II crosses St. Peter's Square in an open Jeep, among thousands of cheering people. Suddenly, three shots ring out across the square. The Pope collapses. The attack, which was described as the "crime of the century", launched an unprecedented investigation that brought about more questions than answers.