Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Time Travel Tale

Koontz crosses genres and spins a fascinating time travel tale that entertains and satisfies. Best-selling novelist Laura Shane has lived a difficult life full of tragedy and heartache. Throughout her life the same man continually appears at just the right moment and repeatedly saves her life. However, each time Laura encounters him she notices he has never aged. Who is this mysterious guardian angel and why is he watching over her?Koontz has written another powerful story full of mystery, suspense, and just the right touch of romance. A great addition for Koontz fans.