Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Juggernaut of Evil

Emery Boyd is a juggernaut of evil in Ben F. Small's debut thriller, a force of nature nearly as powerful as the mountain on which he preys. Nearly... Not quite. This mountain has surprises gushing all over Mr. Boyd and his best-laid murderous plans.Poor Boyd. What started as a simple stock swindle has turned into blackmail of a federal judge. Then his partner discovers the crime, and Boyd must remove him before his goose is cooked. Where better to put him than Rainier, where mile deep crevasses don't speak? But glaciers move, and Rainier's are full. Seems Boyd's been a busy, busy man.Small brings Rainier alive, makes it tremble and shake, even as the reader too quakes with suspense. This is a great story, and I couldn't put it down.But I have to give it four stars only, just because it's a debut. I expect this author may earn my highest respect with his next effort, if it's as good as this one.