The supernatural detective was created through the early merging of scientific deductive mystery stories and the tales of hauntings and otherworldly horrors.
These take different forms, with some stories embracing paranormal fantasies, while in others a protagonist detective determines a logical explanation behind the strange mystery. (John Silence is in the former category.)
This collection brings together two different detectives. Carnacki searches for the truth with both scientific and paranormal techniques, and finds both supernatural and human dangers. John Bell is a "ghost exposer," using logic and reason to extinguish supernatural trappings and (usually) explain the mystery.
