The Hum (from Wikipedia): The Hum is a phenomenon, or collection of phenomena, involving widespread reports of a persistent and invasive low-frequency humming, rumbling, or droning noise not audible to all people.
The Grand Bavarian Hotel was once frequented by Gilded Age luminaries like Theodore Roosevelt, Harry Houdini, and even Nikola Tesla. Now, after decades of neglect, it’s enjoying a renaissance as popular tourist attraction: The most haunted hotel in America. Stay for a night or a weekend, or enjoy a 1920s-themed masquerade ball. Take the tour of the most haunted floors, or see the “Amazing Tesla Science Engine.”
Except that the Tesla engine has been stolen. And stories of the hauntings now seem to be more frequent—and credible. The Estate wants to know if all this is related to the low-frequency hum some people claim to have heard as far away as Denver itself—a hum that has allegedly led to a string of gruesome suicides.
Note: The total page count of 36 pages includes the 18-page adventure, plus 6 double-sided pre-generated characters with accompanying recursion sheets.
By Bruce Cordell