A game they control. A result you already know.
It looks like a simple puzzle.
It plays like a fair game.
It ends like you knew everything from the start.
Secret of the Serpent by Dan Harlan gives you the power to predict choices that feel completely free—using a prop that’s innocent, interactive, and impossible to backtrack.
Here’s what happens:
You introduce a set of serpent tiles, each with different colored ends. The goal is simple—connect them to build the longest possible snake.
Before anything begins, you remove one head and one tail, placing them aside as a prediction.
Your spectator takes over.
They mix the tiles.
They arrange them however they want.
They can change their mind, rebuild, and rearrange as much as they like.
Every decision is theirs.
When they’re done, you reveal your prediction…
…and it perfectly matches the only possible ends of their completed serpent.
Not a guess.
A perfectly accurate prediction of a freely built chain.
This is mentalism disguised as a game—casual, engaging, and deeply deceptive.
The method is cleverly hidden in plain sight, requiring almost no sleight of hand, just one simple move anyone can master. The custom serpent tiles are printed on collector-quality stock, designed to look like a real puzzle you’d carry anywhere.
It fits in your pocket.
It plays like fun.
It hits like a miracle.
SECRET OF THE SERPENT — by Dan Harlan
Let them decide.
Let them build.
Show them you knew all along.