The story of this episode would be later used in another Quinn Martin series, The Runaways, in the episode The Breaking Point.
The inscribed pen stolen by the youthful killer is a gift from the senior class of 1973—this was given to him "last year", making it a year off.
Mrs. Kincaid: It's not like the old days when the son grew up and went into the father's business. When your father retires or dies, he can't leave Paul his money, because he spends most of it so we can live the way we do. He can't leave him his job or the business—they don't belong to him! The only thing he can do is to teach Paul—give him the benefit of his experience, his insight, his ambition.