Crimefile Number 1

Below is a scanned image of the cover of the book Crimefile Number 1: File on Bolitho Blane by Dennis Wheatley. This was a new concept in detective fiction published by William Morrow in 1936. Inside the book the clues to solve the crime are placed on the pages. For instance there is actual hair from the head of one of the victims inside an evidence bag  taped in, plus numerous other items laid in throughout the book. Sadly there was never to be a Crimefile Number 2 as William Morrow found that it was far too expensive to produce any more books of this type.