In this feature-length Special, Derek and Lawrence return to Thessaly in Central Greece for a summer of excavation. They join an international team – headed by archaeologists from Greece and Sweden – to investigate the remains of the ancient city of Vlochos. This season, the team are digging what is thought to be a temple from the Hellenistic era – a golden age of antiquity. But is all as it seems? The team have just three weeks to find out!