This is a great series for any person. I really think teenagers and older would love this series. I plan on introducing it to my teenage son. I believe everyone should read a book like this that deals with the spiritual realm – the battle of heavenly angel army vs the demons. There is a constant spiritual battle that goes on all around us that we are not aware of and most don’t think about. We all know we have a guardian angel, but honestly when do we stop and think about that angel fighting demons away from us, protecting our every way. From just missing a car and being in a wreck to almost doing other things and getting hurt. We might think – Close call! But honestly do you think that maybe that was your angel stepping out and protecting you? I say my angel works overtime with me and my clumbsy ways, but I do stop and say thank you. I pray daily for the angels of my children to watch out for my babies. Reading this book will open your eyes to this realm that people often forget about. This is a series that leaves you longing for more. I will most definitely be reading book 2 in the Fall! I love the way the authors breaks down chapter by chapter at the back of the book and explains what you are reading and backs it up with Bible verses. This is a book of action, suspense, and leaves you with thoughts of Heaven. I received this book for free from Blogging for Books for this honest review.