Better movie searching?

Saturday night TV surfing during a girl-getaway with my sister. We stumble across a movie in which we recognize Robert Mitchum, Frank Sinatra, and Harry Morgan. We’re in a hotel. We don’t know what channel we’re watching.

Through IMDB, I was eventually able to figure out what the movie was, though with three such prolific actors, it was not easy. It would have been so much simpler if I had been able to search for movies in which Robert Mitchum and Frank Sinatra and Harry Morgan appeared together.

Does such a site exist somewhere?

The IMDB already has a “people working together” page that may help you.