"Unnatural History" is the first scripted all-live-action series from Cartoon Network, which, like many other cable networks no longer quite lives up to its name. The channel has already tested these waters with cartoon-related live-action specials (a "Scooby-Doo" movie, a couple of "Ben 10" films) and the cartoon-human sitcom "Out of Jimmy's Head," and last year floated a slate of original and imported kid-themed reality shows. But this is them putting their whole leg in and shaking it all about.

Watch Unnatural History: Season 1 Episode 12 – Speetlemania Now!

Episode 11: Thor's Slammer

Henry tries to clear his uncle's name by solving the murder of the former partner of Jasper's father and finding a Viking artifact that he was looking for.

Watch Unnatural History: Season 1 Episode 12 – Speetlemania Now!