The plot is essentially Bondian: an incredibly-rich and powerful American businessman has been kicked out of Hong Kong after the Chinese resumed control from the British (and they did remove a number of non-native undesirables when this happened in the real world) and his fortunes have suffered ever since. In fact, he's no longer wealthy at all, but keeping up the appearance of such with an elaborate Ponzi scheme - which leads to his revenge scheme: destroy Hong Kong Island while stealing the Bank of China's gold reserves during the chaos.
The hero, rather than Bond, is the engineer who designed the process of using a soliton wave to break up land-fill, turning it into muck. His process was designed for a specific construction project, in a unique situation, while all the time Curtis--the businessman--planned to use it for revenge. George Manville is hardly a hero at the outset, but he learns.
If you've read Westlake, you should know what to expect: action, tight plotting, wry humor. FOREVER AND A DEATH, which was never published during Westlake's life, isn't a bad novel, but doesn't feel like a Westlake novel. It's certainly filled with action, but the plot is kind of rambling (to the point that I wished he'd get to the point) and the attempts at humor are either unsuccessful or too subtle for most people to catch. Honestly, it feels like a great writer's first draft that was published before he had a chance to do his revisions. And this is quite possibly the case: the elements of the story are there, but the Westlake signature touches haven't yet been added.
If you're a big Westlake fan, or a Bond fan, it's not a bad read, but it won't make my list of favorite Westlake books by a long-shot.