The devil's teardrop

"It's New Year's Eve, December 31, 1999, and Washington, D.C., is under siege. Early in the day, a grisly machine gun attack in the Dupont Circle Metro station leaves dozens dead and the city crippled with fear. A note delivered to the mayor's office pins the massacre on the Digger, a robotlike assassin programmed to wreak havoc on the capital every four hours - until midnight. Only a ransom of $20 million delivered to the Digger's accomplice - and mastermind - will end the death and terror. But the Digger becomes a far more sinister threat when his accomplice is killed in a freak accident…