In this new series of Grand Tours, Paul Murton explores a choice selection of lochs from the 31, 000 that adorn Scotland. Travelling from the wilds of the west coast to the Grampian Mountains, Paul discovers the secrets of these iconic features of the Scottish landscape, which are deep enough in places to drown Britain's tallest building. As he crosses the country, he meets an engaging cast of characters who live along the shores of our great waterways, uncovering intriguing tales from the past, and experiencing the glories and variety of the ever changing scene.