If you loved The Departed, try Killers of the Flower Moon
A bridge between a film you've already seen and one most people haven't. Killers of the Flower Moon has roughly 3.9× fewer votes than The Departed — 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 Martin Scorsese, and they both carry the devastating, slow burn mood tags, and they sit in Crime / Drama territory. If that's the register that drew you to The Departed, the second film will land in a comparable space — through a different lens.
What Killers of the Flower Moon is
Osage Nation land, 1920s Oklahoma, oil rigs sprouting. A series of targeted killings unfolds, FBI investigators arrive to unravel the crimes. Scorsese tackles a dark chapter in American history.

