If you loved Key Largo, try The Big Sleep
A bridge between a film you've already seen and one most people haven't. 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 / Thriller territory. If that's the register that drew you to Key Largo, the second film will land in a comparable space — through a different lens.
paranoid
What The Big Sleep is
Rainy Los Angeles streets, a smoky office, a ringing phone. A wealthy general's daughters, one alluring, one corrupt, and a private eye caught in between. Hawks directs with characteristic precision.

