Echo Book Test by Vincent Hedan (Hypnosis) US Playing Card Co. They come complete in a

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Echo Book Test by Vincent Hedan (Hypnosis) US Playing Card Co. They come complete in aThe Echo book test is a project I kept secret for the last few years I use Echo when I want a personal impact; when I want an easy, foolproof book test; and when I want to involve the audience emotionally. But Echo is much more than a simple book test First of all, Echo is a normal book: anyone can read it without suspecting anything, in fact it's available on Amazon. In secret, Echo uses a classic principle by Larry Becker (which he allowed me to use