The Ultimate Psychic Secret by Devin Knight eBook DOWNLOAD"This is a shocking book. I will never use it, but every mentalist should own it to know what is going on. It is a valuable reference, but do not use it. Like a modern day nightmare alley, it exposes the dark underbelly of the art. It should be in your library, but much feels immoral, and you must be hip to it. Treasure it, like a radioactive isotope, but keep your distance." Marc Salem "I do a lot of Q&A acts in my shows and I have different ways to