If you loved Black Christmas, try Murder by Decree
A bridge between a film you've already seen and one most people haven't. Murder by Decree has roughly 5.5× fewer votes than Black Christmas — it's a deeper cut, not a mainstream recommendation. Here's what they share, and what the second one does that the first one doesn't.
What they share
Both films are directed by Bob Clark, and they both carry the dread mood tag, and they sit in Crime / Mystery territory. If that's the register that drew you to Black Christmas, the second film will land in a comparable space — through a different lens.
dread
What Murder by Decree is
Foggy London streets at dusk, gas lamps flickering, a bloody knife lies abandoned. A trail of murdered prostitutes leads to a web of royal corruption. Bob Clark directs a dark Sherlock Holmes thriller.

