While called "film noir," I'm not sure it fits the genre. It's one of those Front Page-like newspaper journalism stories. Stewart is great in it. I saw it on TV when I was a kid, over 30 years ago and remember liking it, but could never remember the name when trying to track it down. However, the way in which the movie ends (no spoilers here) stuck with me all that time and when I saw it recently, I was finally able to solve that mystery.