Four red-backed cards are displayed; they're counted and held by a spectator.
Another set of blue-backed cards is shown, and a second spectator simply thinks of any one. The packets are held by the spectators, who stand far apart from each other.

With the utmost fairness, the mentally chosen card vanishes from the blue packet and appears in the red!

Includes detailed, 16-page booklet written by Phil Goldstein and fully-illustrated by Tony Dunn and the seven specially-printed cards on Bicycle stock that make this effect possible.