★ 55% discount for bookstores! Now at $19.95 instead of 24.95! ★ Would you Like to know how to spot deception and defend yourself? Look no further, your customers will love this book on the Dark side of manipulation! You see, Dark Psychology and Manipulation techniques may seem friendly or flattering, as if the person has your highest concern in mind, but in reality they hide secondary purposes and they are extremely powerful.. ★ 55% discount for bookstores! Now at $19.95 instead of 24.95! ★ Would you Like to know how to spot deception and defend yourself? Look no further, your customers will love this book on the Dark side of manipulation! You see, Dark Psychology and Manipulation techniques may seem friendly or flattering, as if the person has your highest concern in mind, but in reality they hide secondary purposes and they are extremely powerful.