A shockingly bad book cover for a mystery novel by Ellery Queen. “Ellery Queen” is both a fictional character and a pseudonym created and used by two American cousins from Brooklyn, NY - Daniel Nathan (alias Frederic Dannay) and his cousin Manford Lepofsky (Manfred Bennington Lee). They also allowed the Ellery Queen name to be used as a house name for a number of novels written by other authors, most of them published in the 1960s as paperback originals and not featuring Ellery Queen as a character. The above is one of those and it was written by John Holbrook Vance, AKA Jack Vance. Confused yet?