Lie Detector

Lie Detector is a classic plot in card magic in which a magician can detect the selected card by having the spectator's purposely miscall it.

First suggested by Vincent Dalban in a letter sent to Theodore Annemann on December 5, 1934. Annemann published in Jinx January 1935 (No. 4) as a posed problem.

Publications

• Lie Detector in Card College Light by Roberto Giobbi (2006)

Lie Speller

Lie Speller is a variation developed by Martin Gardner in the 1930s in which the spectator answers questions and is allowed to lie or tell the truth as the magician spells out the answer using the cards, the selected card ends up being the last card dealt.

Publications

• Martin Gardner's Lie Speller in Joe Berg's Here's New Magic (1937)
• That's The Way They're Done in My Best by J.G. Thompson Jr. (1945)
• Newspell by Martin Gardner in The Jinx Winter Extra 1937-1938
• To Lie or Tell the Truth by Jack Avis in More Self-Working Card Tricks by Karl Fulves (1984)