Oddly compelling organ music and singing may seep out from Macky Auditorium in Boulder late at night when the building is empty. There are reports of a woman’s eerie shadow in a window and of blood that appears and disappears on the wall and floor of a tower room, the place where Elaura Jaquette was murdered in 1966. To find out if this is simply local lore or perhaps more, Jack Hanley, a European historian working on his doctorate at the University of Colorado, has assembled a team of skeptics, including himself, a psychologist, and an investigative journalist, and joined forces with a team of ghost busters, writes the Daily Camera. The result is a series of five episodes in collaboration with the Rocky Mountain Paranormal Research Society called “Colorado X: Case Files of the Paranormal,” which explores several local unexplained mysteries.

I ran into the research society in 2006, while working as a reporter for the Colorado Springs Independent, in the newspaper’s office, an old church that was converted into a maze of modern cubicles. The researchers spent a long night wearing headphones, listening to amplified sounds, watching video, and eating M&Ms in hopes of recording an apparition. Everyone got a little creeped out when someone heard distant, somehow blissful voices—perhaps singing—that turned menacing. Even if you’re a hardcore doubter, it’s hard to deny that ghost legends can be great for tourism, as Texas’ Austin American-Statesman discovered in Estes Park.