Ashdown, Clifford: The Assyrian Rejuvenator. V1. 8 Mar 2011
 

Clifford ASHDOWN [Pseudonym of R Austin FREEMAN (1862-1943) and John James PITCAIRN (1860-1936)]

Inflated claims about the powers of an expensive elixir put private investigator Romney Pringle in pursuit of a ruthless con man. The trckster has reason to believe that his customers won't complain, but Pingle sets out to destroy the crooked business.