Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Himmler's SS Occult castle makes great reading!!

The subject of this book is the Wewelsburg Castle of Germany. It was here Himmler met with his top 12 SS Obergruppenfuhrer and possible conducted occult rituals. There were two rooms built in the castle with ritual like symbolism. Wewelsburg plays a big part in my own novel, Out Came Blood and Water, which will come soon. Anyhow, this book begins with a plot to get the Soviets to go against the Allies by giving them a list of Nazi supporters in Britain. The plan fails, and the SS man assigned to do it hooks up with a British reporter and they use the list for blackmail. Through a series of events, Wewelsburg gets into the mix and the climax is great. Time magazine called the ending "...one of the best siege narratives since The Guns of Navarone." This book is unlike most of Kyle's work, but nonetheless is wonderful.