In this book he teaches us how to evaluate both evidence and witnesses. He takes you step by step through the process, the same process he uses as a detective, the same process jurors are instructed to use when evaluating the evidence for a verdict. Along the way, he also gives us real-life examples from the homicides he has worked. Those examples help you see as you may never have before, the power of the evidence we have for our faith. As he says several times, both in the book and on its cover, "You can believe because of the evidence, not in spite of it."
You may have a problem or two with his doctrinal beliefs, but that is really not the strength of this book anyway. Read it for what it's meant to do and you will be fine.
Cold-Case Christianity is published by David Cook.