The staff at a library in Ohio are baffled by a bizarre mystery  surrounding a bevy of empty steak sauce bottles that have been found  hidden throughout the building.

Since the first one was discovered in early January, an astounding 27  more bottles have been found behind books and among magazines at the  Avon Lake Public Library.

As the curious pieces have accumulated over the last few weeks,  employees have even begun competing to see who can find the next one.

Meanwhile, they're also trying to get to the bottom of the bottle  mystery, as they have no idea who is leaving them at the library nor  why.

More on this puzzling story at the Coast to Coast AM website.