This is a vintage novel titled “The House Without a Key Behind That Curtain Keeper of the Keys”  that was written by Earl Derr Biggers. It was published by Grosset & Dunlap and is in good condition with moderate wear including scuffs, mild discoloration and writing that does not affect legibility.

Please see photos for the best view of the condition and let us know if you have any questions. Most of the books listed are vintage and antique and could have that older book smell from storage.