My Title Theory
I've read people's comments here and there wondering why the movie is titled "10 to Midnight." I always thought I knew, but the last time I watched the flick I could find nothing that would explicitly explain the title (except the poster, which mentioned a "deadline" that doesn't exist in the movie).
Now back when I saw this on TV around 1990, my impression had been that the title referred to the time of the initial murders and the killer's alibi--that he had made it seem like he had been in the movie theater between 10pm and midnight when he was really out committing the murders. 10 to Midnight.
Thompson's later Bronson films were always hastily edited (usually by his son) with lots of bloopers. Maybe a shot of a clock got mistakenly edited out?
Does anyone else have any ideas?