Self Guided Groups set out with nothing but their wits, a treasure map and a backpack of beautiful tools to solve the mystery within two hours. No app or downloads required! Escape into a world away from your phone for a bit. Explore the City Discover the secrets hidden in history you as you follow the 3km route through London's historic city center. Real Stories Learn about real stories from history as you follow secret societies, seek lost treasures, and solve mysteries from past. Fun for All Great for dates, families, colleagues or friends. Teams of 2-5 players enjoy together and larger groups split up and compete.