I believe I know why this film is 'underrated' - for one thing, the overhead microphone deserves credit as a supporting actor - it was in at least four scenes! The best example is when Mitchum is visiting an old flame and the microphone swings to and fro over their heads for at least ten seconds!?!? Either the entire crew is blind or they don't care - from the end result of this movie I think the latter must be the case.
It seems like everybody in every department on the film is trying to do the worst job possible - at one point the always inappropriate music sounds right for a quiet, suspenseful scene - in the middle of a gunfight / car chase!! Then, when information is being slowly typed up on a computer, the whole orchestra goes into full melodramatic swing! The camera-work is also appalling, surely they could have afforded steadicam!
The plot of the film must have looked good on paper - two old friends caught on opposing sides of the law, facing up to old age - but it is handled at a pedestrian pace. Now I am a big fan of Mitchum's - that's why I got this bargain bin DVD - but he looks as bored playing in this as you will watching it, although he still manages to be the only actor who creates a believable character. Wilford Brimley wouldn't even have convinced if he wasn't sharing most of his scenes with that damned overhead microphone! He has a serious charisma deficit and any emoting he may have been capable of is hidden behind the most ridiculous walrus moustache I've ever seen.
With slow pacing and ridiculous suspension of disbelief (they keep robbing safes and shouting and banging around and don't arouse suspicion? The entire crew missed the twenty minutes of screen time Mr. Microphone has?) this is one to stay well clear of. Listen to me. That's 94 minutes of mortality lost forever, and now all I have is this novelty state of the art frisbee!