The Remake
While i was watching this, I said to my friend this would make a good remake. I checked and it was a TV movie in 1967 with George Segal playing Glen. Segal was 33 when he played the role and Bogart was around 55. I had read that they made the role older for Humphrey Bogart to play it and also that it was his last tough guy role. He died in 1957 though. I thought he did great and he aged well. He didn't for a second seem too old or out of place in the role.
If there was a remake today I think they should get Woody Harrelson maybe? Or Brad Pitt when he's crazy like in the old days in Kalifornia.