DONT read the book first and then watch the movie...
...you'll be in for a disappointment.
I made the mistake. The book is superbly well written, and by far the best Jack Higgins novel. It is also very well followed up by The Eagle Has Flown.
There were several aspects of the movie which were disappointing; and biggest disappointment though came from Liam Devlin. In the books, Devlin is portrayed as a very witty, cunning and resourceful man. As one reads the book, one actually comes to admire the character a lot, who is also extremely entertaining. I feel Donald Sutherland failed to bring out the real Devlin.
So I can not offer a neutral opinion about this movie, as the book had raised the standards too high, and the movie could not reach those standards.