Andy McGrath explores Devon's pre-history in an ancient cavern, takes a crime-through-time tour of Dartmoor's prison museum, and uncovers the terrifying legend behind Arthur Conan Doyle's The Hound of the Baskervilles.

Andy explores Wiltshire's mysterious megaliths and barrows, visits a medieval meadery and encounters a religious pilgrimage at the site of a freshly made crop circle.