Historians have long argued that at this point the course of Antioch’s second siege, indeed the fortunes of the entire crusade, were transformed by a single dramatic event. On 14 June a small group of Franks, led by a peasant visionary named Peter Bartholomew, began digging in the Basilica of St Peter. Bartholomew claimed that an apparition of the apostle St Andrew had revealed to him the resting place of an extraordinarily powerful spiritual weapon: the spear that pierced the side of Christ on the cross.
