en Cuevana 3. Tristan, a mysterious being tasked with leading departed souls through limbo and into the afterlife. When a train crashes in the Scottish Highlands, he meets Dylan, a spirited young woman struggling against her fate. While Tristan’s duty is to protect Dylan from an encroaching darkness, his task and their journey become increasingly perilous as they find themselves falling in love – and Dylan refuses to leave Tristan behind.