On the final leg of their epic journey across Secret Britain, Matt Baker and Julia Bradbury head for the borderlands and beyond to discover that there is much more to this wild landscape than meets the eye. Intrepid Victorians, Roman Emperors and imaginative locals have all left their mark; their secret stories all hidden in this astonishing landscape. Matt takes the train to Britain's most remote railway station while Julia explores Glencoe in search of a hidden valley that lives up to its name.