The show was about Harry Fox, a free-spirited private detective who lived by his wits, and his high-strung attorney son, Harrison, who unwillingly and frequently found himself dragged into his father's cases.
The show's opening would always feature Harry and Harrison talking on the phone in their offices like this:
Harry: Harrison, I need your help.
Harrison: Dad, you keep forgetting. I'm a lawyer. You're the detective!
Harry: Aw, come on son. All I need is a ride. What could possibly happen?