A Dell mapback. From the interior:
When a man vanishes into thin air before his very eyes, Sir Henry Merrivale, the expert “miracle debunker,” sets out to expose the trick. Sir Henry is a master of hocus-pocus, but he has to prove to himself – and to the police – that such a thing can’t be done, although he doesn’t expect, before he’s through, to see mystery turn into murder.
- John Dickson Carr : The Plague Court Murders, 1934 (thenewinvisibleman.wordpress.com)
- Review: He Wouldn’t Kill Patience (fiveminutemysteries.wordpress.com)