Instruct: Classify Amazon reviews into positive or negative sentiment
Query: SUSPENSE in the spirit of Day of the Jackel

The Zero Hour combines incredible suspense with an intriging use of current technologies.In some ways, this book reads like a combination of Ken Follett and Tom Clancey, except that the technology adds interest rather than makes the plot confusing..The Zero Hour couldn't be more timely. I was just finishing it as I heard of the bombing in Saudi Arabia and the Arizona militia arrests. I read most best-sellers in the "suspense and thriller categories", and found Zero Hour to have much more substance than most.Very highly recommended!