Sherlock Holmes and the Element of Surprise

Two prison guards were found beheaded outside Her Majesty's Prison, in desolate Wormwood Scrubs. Inspector Lestrade asks Holmes' help, relying on the detective's powers of observation, for there's little to observe. The bodies were found apart, and the only footsteps noted were those of the murdered men, themselves. As Holmes and Watson investigate, they discover mysteries within the mystery, some that will shake their ideas about the paranormal to the core.