This book definitely delivers on the promise of "a hair-raising experience." Crichton is a master of creating suspense and holding secrets until a good way into the book.

That said, this was not one of my favorites. While the book started favorably enough, it lost its suspense about 200 pages in. While I thoroughly enjoyed the segues into biological studies, they tended to detract from the main story - so much so that once I was 5/6 through the book, I began to think, "He's running out of room to create a really smash-up ending." The unfortunate result is that I hardly felt any suspense during what should have been a climactic ending.

A good (and fast read), but definitely not the late Crichton's best work.