Gemini Artifacts is proud to present Howard Blackwell’s Killer Clowns. This audience-tested effect that has been performed thousands of times by Blackwell, is now brought to you in this 24-card edition.

These cards were specifically designed for training within the division of Behavior Analysis (Unit-2 Violent Crimes) at the Federal Bureau of Investigation. The test administrator would ask each cadet to allow their feeling to lead the way and proclaim if each picture gave a good feeling or perhaps a bad one.

The administrator would place them in separate piles. The piles would then be turned over to reveal that indeed the cadet had sorted the piles perfectly!
Killer Clowns comes complete with the 24 cards as well as a full detailed manual that explains the effect.