On a bleak mountain highway in the mountains of Tajikistan known as "the roof of the world" on July 29, 2018, Lauren Geoghegan and Jay Austin were brutally murdered by five ISIS terrorists along with two other cyclists. They were both Georgetown University graduates who had quit their well-paying Washington, D.C. jobs to pursue a bike trip around the world, looking for a different kind of American Dream. Pieced together from Jay and Lauren's Simply Cycling travel blog and social media posts, interviews with their friends and family, and media coverage of their murder, author William Elliot Hazelgrove creates a complete, narrative retelling of Jay and Lauren's story. Evil on the Roof of the World combines biking and travel adventure with true crime elements, sensitively presenting the trajectory of Jay and Lauren's hopeful beginnings; the difficulties and meaningful experiences they found on their journey; the foreshadowing leading up to the attack; and the way they, their loved ones, the media, and the perpetrators made sense of this violent encounter. Like Jon Krakauer's Into The Wild, this is a story of a couple who went off the grid to find the great adventure of life.