Uncertain Endings: The World's Greatest Unsolved Mystery Stories

Offers an anthology of nineteen classic mystery and puzzle stories from such authors as Frank R. Stockton, Ray Bradbury, Peter Godfrey, Roald Dahl, Mark Twain, Stanley Ellin, and Aldous Huxley.
A fine showcase for a rare and difficult form of the mystery story; fun to read and made more fun by Penzler's lively introduction.

Contains:

Unreasonable doubt -- Stanley Ellin
A dilemma -- S. Weir Mitchell
Nunc Dimittis -- Roald Dahl
The lady, or the tiger? -- Frank Stockton
The discourager of hesitancy -- Frank Stockton
The lady and the tiger -- Jack Moffitt
The blind spot -- Barry Perowne
The mysterious card -- Cleveland Moffett
The mysterious card unveiled -- Cleveland Moffett
Karmesin and the meter -- Gerald Kersh
One hundred in the dark -- Owen Johnson
The whole town's sleeping -- Ray Bradbury
At midnight, in the month of June -- Ray Bradbury
Thimble, thimble -- O. Henry
The Gioconda smile -- Aldous Huxley
Tea for two -- Laurie York Erskine
The lady and the dragon -- Peter Godfrey
A medieval romance -- Mark Twain
The moment of decision -- Stanley Ellin.