Tom Atkins!

I can't believe I'd forgotten that genre film legend Tommy Atkins played a heavy on Hawaii Five-0. Too bad the episode (Sing A Song Of Suspense S8E8) was a bit a dud that Atkins didn't/couldn't elevate. He's even probably one of the weakest villains in the show's entire run.

One of the weakest villains? I’d strongly disagree. Didn’t he send a teddy bear with a missing head to a little girl? That’s pretty evil! In any case, while he might not be among the strongest villains I wouldn’t call him one of the weakest. We had some real duds over 12 seasons.