The Tell-Tale Heart

When Edgar sees his girlfriend Betty getting up close and personal with his best friend Carl, he murders Carl in a jealous rage and hides the corpse under the floor of his piano room. Comes the night, and Edgar begins to hear strange sounds coming from under the floor...

The problem with this film is that it apparently fell into the public domain, so the DVD copies floating around are pretty rough, and make the film look much cheaper than it really is. A better version (which may never happen), might reveal this to be a lost classic, actually predating Roger Corman's Poe films by a few years.

The costumes and such are very nice, and the story is well-written to build up to the part that Poe covered. While this is obviously a Poe tale, the writer (Brian Clemens) deserves much credit, as the bulk is his creation.