In Too Deep is one of the best Christian suspense novels that I’ve read. It’s a fast paced and it has several unexpected twists. I didn’t read the previous book in the series but I would highly recommend to. It had several plot lines that carried over and didn’t quite make sense. However these were all minor issue and it didn’t take away from the main story. Fans of Irene Hannon will enjoy this as it’s quite similar to her Guardians of Justice Series. It’s an awesome read.