If you loved The Woman in Cabin 10, try Harper
A bridge between a film you've already seen and one most people haven't. Harper has roughly 5.2× fewer votes than The Woman in Cabin 10 — 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
Theyboth carry the paranoid mood tag, and they sit in Crime / Mystery / Thriller territory. If that's the register that drew you to The Woman in Cabin 10, the second film will land in a comparable space — through a different lens.
paranoid
What Harper is
Rainy night streets, a lone saxophone sounds, a fedora-clad figure emerges, a wealthy woman's mansion, a missing husband's trail. Directed by Jack Smight in the classic thriller vein.

