Nothing lasts forever / Roderick Thorp.

Enhanced descriptions from Syndetics:

High atop a Los Angeles skyscraper, an office Christmas party turns into a deadly cage-match between a lone New York City cop and a gang of international terrorists. Every action fan knows it could only be the explosive big-screen blockbuster Die Hard. But before Bruce Willis blew away audiences as unstoppable hero John McClane, author Roderick Thorp knocked out thriller readers with the bestseller that started it all. A dozen heavily armed terrorists have taken hostages, issued demands, and promised bloodshed all according to plan. But they haven't counted on a death-defying, one-man cavalry with no shoes, no backup, and no intention of going down easily. As hot-headed cops swarm outside, and cold-blooded killers wield machine guns and rocket launchers inside, the stage is set for the ultimate showdown between anti-hero and über-villains. Merry Christmas to all, and to all a good fight to the death. Ho ho ho!