Casey was the secretary of Herb's father. When his secretary, Miss Brent, leaves to get married, he talks her out of retirement to take the young lady's position.
We learn from Maris why Weston is so eager to help him clear possibly innocent suspects. As a rookie patrolman, twenty years earlier, Weston picked up a man for murder. He was convicted and sentenced to death. Three years later, as a detective, Weston confronted a gunman who confessed to the earlier crime which resulted in an innocent man was executed. He vowed not to allow that to happen to anyone else.
On the marquee of the Monica theater were two Jean Cocteau films: "Orpheus" and "Eternal Return." The ex-girlfriend died on the street just by the theater.