Dover, Mineola, NY, 2006.  ISBN 0-486-44928-9.  Trade soft cover, 175 pages plus catalogue.  Unread copy with light scratches on rear wrap and bit of soil on bottom edge.  ‘The young lady had just retired to her room when sounds of a struggle ensue, and cries of “Murder!” and revolver shots ring out.  When her locked door is finally broken down by her father and a servant, they find the woman on the floor, badly hurt and bleeding.  No one else is in the room.  There is no other exit except through a barred window.  How did the attacker escape?  First published in 1907, this intriguing and baffling tale is a classic of early 20^th-century detective fiction.’ (from rear wrap)