A Texas oilman. A brilliant female archaeologist. An unknown world underneath the Vatican. In 1939, a team of workers beneath the Vatican unearthed an early Christian grave. This surprising discovery launched a secret quest that would last decades – a quest to discover the long-lost burial place of the Apostle Peter. From earliest times, Christian tradition held that Peter – a lowly fisherman from Galilee, whom Christ made leader of his Church – was executed in Rome by Emperor Nero and buried...