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.