Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent twist on vampire mythology

Lumley's Necroscope series is a great change of pace for all vampire fans getting bored with the sensitive and romantic vampire trend that seems to have been going on for the longest time. The Lumley books combine spying, action, fantasy, alternate universe mythology, but best of all, real hard core vampires. It's great to see the vampires threatening again, like in true horror!