This was a really good book, one that keeps you guessing from the beginning. I found myself running through some scenarios to try and figure out my best guess to what was going on, and was completely surprised with the ending. Being about a pharmaceutical company, this book is loaded with medical terminology and is pretty much on the mark in some rather complex principles. There were TONS of characters in this one, maybe a few too many. I had to keep up with who was doing what, who was on who's side, and who worked for which outfit. This only adds to the mystery of the novel, and, overall, I was really impressed with this one. I'll be reading more of Mr Margolin's works!