Can anyone tell me which series of books that the show is actually based off of? When I looked it up I was very confused as there are multiple series, but some seem to be spin offs and such and I am confused! by HappyLittlePill04 Related: Books similar to Coke and Pepsi? (2000’s) Book to get more positive energy What medical guides and textbooks would you recommend to learn Trauma and Emergency medicine treatments? Please help me find a book Need a Romantic recommendation