The Team investigate a 2000-year-old underground chamber - a fogou - in Cornwall. What was it used for, is there another underground passage nearby and was there an Iron Age Settlement on the site?
The river valleys of Oxfordshire were home to mammoths 250,000 years ago. The Team help local archaeologists get woolly pachyderm evidence out of a gravel pit before it's turned into a waste tip.
In Somerset, the Team search for evidence of the Knights Templar, the fighting monks who protected pilgrims on their way to the Holy Land in the 12th and 13th centuries
In their first underwater excavation, the Team examine the remains of a ship wrecked 400 years ago off the Devon coast. Does enough of it remain to identify it? Was it part of the Spanish Armada?
According to Celtic legend, the fort of Emain Macha was built by a king who also built a palace for his treasure and another for the spoils of war. Can the Team find any trace of these other palaces?
A Suffolk farmer has gathered hundreds of pieces of Roman pottery, jewellery and coins from one of his fields. Where did all this rich material come from and why is it so concentrated in one area?