Don't forget the spliced tape where Gene Stafford must have said "Hello Jessica, this is Gene Stafford, is he there?" In court it might be hard to explain why that section of the tape was gone. The laces were the kicker, but the false alibi where Milo went, etc. would all help add up to conviction.
I also love the jingle, can't get it out of my head for a day or two after watching that episode each time.
I was born in '82, so I missed out on the '70s, but I'm quite fond of that era. What really cemented that fondness pretty early on was "Columbo", actually; that and "In Search of...", which I would watch together weekday mornings on the A&E network in the early 90s (they're still my two favorite shows ).