Detective stories in which the great Thomas Carnacki investigates the supernatural using scientific tools, such as photography, and tools that are augmented by theories of the supernatural, such as the electric pentacle, which uses vacuum tubes to repel supernatural forces.
- ISBN10 1495224295
- ISBN13 9781495224294
- Publish Date 20 January 2014 (first published 1 August 2001)
- Publish Status Active
- Imprint Createspace
- Format Paperback (US Trade)
- Pages 130
- Language English