The Avenging Conscience

Over on the TCM boards, somebody mentioned having watched The Avenging Conscience or: "Thou Shalt Not Kill". It's a 1914 film from D.W. Griffith that's based in part on Edgar Allen Poe's short story "The Telltale Heart", and on some of Poe's other stuff.

I hadn't even heard of the movie before, but since it's from 1914, I realized it's in the public domain, which means that it's likely available on Youtube. Sure enough, a Youtube search revealed multiple copies. The movie has received a DVD release, although Amazon implies it's out of print. The TCM SHop does seem to have it available, although they list it as 68 minutes, while IMDb claims it was originally 78 minutes. And some of the Youtube copies are around 83 minutes. (Some of that, I'd presume, is down to the playback speed.)

I haven't watched it yet, but here it is on Youtube: