Someone, or something, has been bumping off National Museum of American History staffers involved in the recent discovery of a long-lost invention by Benjamin Franklin. This “infernal machine” has a murky past: Freemasons supposedly used it as part of a secret ritual. Are the deaths caused by the invention, or part of the fabled “Curse of the Freemasons”? Or is a serial killer on the loose? Your team of sleuths will have to crack a secret code and uncover the museum’s secrets to solve the mystery and stop the killings. This hunt is for adults only. For murder hunts, we strongly recommend hunting with a team of three or more. If you sign up with fewer than three people, we suggest pairing up with others at the start of the hunt to form a larger team.