ACE IN THE HOLE

'Ace in the Hole' is a slang expression meaning a secret or extra asset to assure success, referring to the ace playing card a player has as a hole card (or face down card) in a game of stud poker.
References to this expression include:

★ "Ace in the Hole", a 1909 Tin Pan Alley popular song by James Depsey and George Mitchell

★ ''Ace in the Hole (film)'', a film made in 1951 starring Kirk Douglas

★ "Ace in the Hole (Cole Porter song)", a song by Cole Porter.

★ "Ace in the Hole", a 1979 song by Paul Simon.

★ "Ace in the Hole", a song by George Strait

★ "Ace in the Hole", song by Bunk Johnson & Lu Watters

★ "Ace in the Hole", song by Dave Van Ronk

★ "Ace in the Hole", song by Jan Menzies

★ "Ace in the Hole", song by Bob Scobey

★ "Ace in the Hole", song by Dukes of Dixieland

★ ''Ace in the Hole (book)'', a science fiction book in the ''Wild Cards'' series

★ "That Old Ace in the Hole", title of a novel by Annie Proulx