The Whithorn Way follows an ancient pilgrim route from Glasgow to Whithorn in Dumfries and Galloway. In this episode, we begin on the waterfront at Irvine looking at the unique remains of an automatic tide signalling apparatus - we learn more about it at the Scottish Maritime Museum. This is followed by a walk along Irvine beach which can only be described as 'hoaching'. As they wander along the beach to Troon, Mark and Rachel contemplate the appeal of modern day pilgrimage. We also hear some reading recommendations from Christina Riley of the Nature Library. Then it's off to Prestwick to visit Bruce's Well and the site of the leper colony there. We end at St John's Tower in Ayr, a building that has seen many a significant event within its walls.