Those two titles remind me of “In Search of” with Leonard Nimoy from the 1970s.
That or “Bullsh!! or Not” with Henry Silva
Was Jack the Ripper really the Loch Ness Monster?
https://www.youtube.com/watch?v=OlURaumkAA8
As a very young 70s kid, In Search Of gave me a few nightmares. I still like it even with its dated looks.
They must have bought some high priced synthesizers. Plenty of it in every episode.
"In Search of..." covered more ground than "Unsolved Mysteries", and did a better job on the overlap than the slightly later "Arthur C. Clarke's Mysterious World". It also (sort of) helped to bring us the documentarian Michael Wood. And in the episode about the Great Pyramid, the cute teen girl seen climbing down from the summit first thing in the morning is now a FReeper. :^)