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Although many blockbuster scares turn out to be nothing more than a ream of overheated typing with a menacing cover, officials said they are exercising great caution in handling this incendiary thriller.

“We’re keeping our eyes peeled for clever devices,” NYPD bomb-squad leader Roy Czulewicz said. “But many bestsellers have been known to hold people captive for hours with rapid-fire prose. Once you pick them up, you suddenly find you can’t put them down.”

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