"The Big Clock" is a really great film. I looked at it again recently and it was as enjoyable as ever. I also liked the trailer which incorporated footage of Ray Milland performing the same role on an episode of the radio program "Suspense." It was interesting to see how tense Milland was as the clock on the wall indicated that the radio broadcast was about to begin.
The remake "No Way Out" with Kevin Costner is a pale imitation of the original. It is not a faithful remake at all. The film introduces elements of political intrigue and spying in Washington. Stick with the original.