Wow I love this series!! Never thought I would like a book about giant monsters (Kaiju) but these books really deliver. Mr. Robinson really mixes the world of sci-fi, chimera, Kaiju, action and non stop page turning suspense. Mix in some wise a$$ comedy at times and fun characters you grow to like such as a tough as nails woman and a fearless vet who is their helicopter pilot. The prequel Island 731 links in on the second book. Read them in order. I loved these books def worth your credit/money! Great narration as well!!