Sleightful logoSleightful

The Lie Detector by Bharat Patel

Created by: Bharat Patel

The Lie Detector is a captivating close-up card trick that transforms a simple card selection into an interactive lie detector game. A spectator shuffles and selects a card, which is then lost in the deck. Using a series of questions (e.g., 'Is it a red or black card?'), the magician guides the spectator through a playful interrogation, where their answers—truthful or lies—lead to the revelation of their chosen card. The trick culminates in a dramatic and seemingly impossible reveal, as the magician spells out 'truth' to uncover the selected card. This trick is perfect for performers who enjoy interactive, psychological magic with a strong narrative element.

Key features

  • No advanced skills required—great for beginners

  • Highly interactive and engaging for spectators

  • Self-working with minimal setup

  • Works with any deck of cards

  • Strong psychological impact

Pros

  • Creates a memorable, interactive experience

  • No sleight of hand needed

  • Versatile for close-up or parlour settings

  • Easily resets for repeated performances

Cons

  • Explanation can be complex for beginners

  • Requires clear presentation to maximize impact

Effect

The Lie Detector is a card trick where a spectator freely selects a card, and through a series of questions, the magician reveals it—even if the spectator lies about their choice. The trick uses a unique presentation where the spectator’s answers guide the magician to the correct card, making it seem like a real lie detector test.

Full details

The trick involves a spectator shuffling and selecting a card, which is then lost in the deck. The magician uses a special set of cards (or a gimmick) with questions like "Is the card red or black?" and "Is it a heart or diamond?" The spectator answers, and the magician spells out their responses, narrowing down possibilities. Even if the spectator lies, the magician can still find the correct card by spelling the word "truth." The method is self-working, meaning no advanced sleight of hand is required.

Who should consider the trick

This trick is ideal for beginners and experienced magicians alike. It requires no prior skill, making it accessible to newcomers. Performers who enjoy interactive, audience-driven magic will appreciate the engaging presentation. It works well in casual settings, close-up performances, or even as a mentalism piece.

Information on how difficult it is to perform

The Lie Detector is easy to perform. The method relies on a simple principle rather than complex moves. The hardest part is the presentation—keeping the spectator engaged and selling the "lie detector" premise. A little practice with the pacing and handling of the gimmick (if used) will make the trick smooth and convincing.

What magicians say

Matt McGurk calls it "one of the strongest card tricks ever," praising its self-working nature and strong audience reactions. He notes that the false recap (where the magician misdirects about the sequence of events) makes the trick feel like a miracle.

Scott Perry, who reviewed Bharat Patel’s version, describes it as "fantastic" and "well-designed," though he mentions the explanation can be complex. He highlights the interactive nature of the trick, where spectators answer questions that lead to the reveal.

Both reviewers agree that The Lie Detector is a powerful, easy-to-perform trick that gets strong reactions. The combination of audience participation and the "lie detector" theme makes it memorable and fun.

What people are saying about The Lie Detector

EverythingMagicPro99 says...

The Lie Detector packs a powerful punch—it's well-designed, easy to carry, and turns a simple card selection into an interactive lie detector test.

MattMcGurk says...

The Lie Detector is one of my absolute favorites—it's so easy, totally out of your hands, and absolutely kills. [...] They can literally lie to your face, and you still find the card.

Performance videos

Tutorial videos