This book has many problems. The characters are completely unbelievable in their roles. The profiler (Kyle) is a felon and psychiatric patient but is trusted with sensitive information and allowed to lead a police investigation. The lead detective (Nicole) is totally inept as a police officer and has more than a few loose screws. She seems not to understand investigative or police procedure. Along with the other law officers they display all the ineptitude of the Keystone Cops but none of the humor. Both Kyle and Nicole are emotionally immature and mentally unstable (although the author attempts to portray them as 'misunderstood'). Their relationship is not at all believable. The plot begins reasonably enough -- a serial killer preys on women and takes a trophy -- but turns bizarre and then ridiculous. I suppose that is the word I would use to sum this book: 'ridiculous'.The author has enormous flights of fancy unconstrained by matters of law, psychology, or medicine. The novel belies the lack of fact checking. For example, scenes in the book break many rules of police procedure with regard to crime scene investigation, chain of evidence, and apprehension and questioning of suspects. One example of another type of error is when a police officer shows a picture of a woman who has a "split lip" after being beat up. The police officer states that it took 27 stitches to close the lip. That's quite a "split lip". Sutures average about 5 stitches to the inch; slightly more for the face. An incision requiring 27 stitches would be about 5 inches long, and that is longer than a lip. It's about the circumference of the mouth. Another medical misstep occurs when the author states that Kyle had his blood drawn every hour to be tested for mad cow disease. First, there is no blood test for mad cow disease. Second, one would not check blood every hour for any infectious disease -- it simply isn't useful. Apparently the author thought that 27 stitches or testing blood every hour sounded extreme and so used them. However, these (and many other things in the book) are beyond extreme: they're ridiculous. A bit of research would have prevented such bizarre errors.As another reviewer stated, there's a reason this book is self-published: no reputable publisher would have printed it. Too bad a reviewer can't give zero stars: I would have. 

Question: Why is the character dumb?
Answer: The characters are completely unbelievable in their roles