I have just finished watching the film and as I have never read the book, I viewed it with no expectations. If you're after action a fast paced movie then this probably isn't for you as the drama unfolds at a slow to medium pace. Tom Conti and Daryl Hannah do a pretty good job in the role and are the glue that hold the film together. I won't go into what the film is about as that would render it pointless to watch but I will add that this is the not the kind of movie that you can watch over and over again but will find satisfying for the one viewing if you like suspense mysteries.
In conclusion, it's not the best film i've seen, but I did enjoy it so I gave it a 7.