Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent Christian Fiction!

The Door Within is a Christian fantasy book, written in the allegorical style of The Chronicles of Narnia, but with a modern twist. Young Aidan Thomas, the main character, is about to enter high school when he discovers three mysterious scrolls in his basement. They beckon him to another world of knights, dragons, and war, and he finds himself wrapped up in a dangerous mission: to save the kingdom of Mithegard from the evil clutches of Paragory.The book is filled with action, mystery, and peril, and I found it impossible to put down. Christians will love the clear allegory and good Biblical messages, and any reader will enjoy the nail-biting, page-turning suspense that keeps you up late at night; waiting to find out what happens next. This was the first fantasy book I ever read, and after reading The Door Within I became a huge fan of the genre. I highly recommend this book!