It won't nudge Double Indemnity out of the top slot for me, but I am thrilled to have discovered this glorious specimen of the noir genre this late in the game.
The male cast is outstanding, Robert Mitchum is solid and sexy and right in the pocket, as usual, and Kirk Douglas is a perfect foil, but that Jane Greer...yowsa! She was a girl of 22 when she filmed this and she walks away with the damned show. She's tantalizing and maddening and gloriously feline. It's magnificent.
As a side note, I'm now viewing it again as I type this (I looooove my Cinema Display!) and the commentary by James Ursini is excellent as well. It's not super-gnarly, Criterion-detailed commentary, but thorough and pretty engaging.