Double Indemnity:
(n.) provision for payment of double the face amount of an insurance policy under certain conditions, e.g. when death occurs as a result of an accident.

I think this is the first film noir I've seen —as well as the first movie I see from Billy Wilder besides a few scenes from Sunset Boulevard— and it's amazing. I really don't know how to review this more than saying that I was surprised by it and also on the edge of my seat wondering what was going to happen the entire time.
Looking at the definitions I have from what a film noir is, I think Double Indemnity encapsulates this concept perfectly.

The film noirs were a response to the alienation of the 40's and 50's America. It channeled the loneliness and uneasiness of the Post-War and its most notorious characteristics were use of flashbacks, intense shadows and strong contrasts, black and white cinematography, subjective narration, morally ambiguous characters and the iconic femme fatale —that was a specific reaction of the fear caused by the rise of women in the work-place and the fear of men of being replaced—. (Source: Angeles notebook)

Phyllis Dietrichson has to be one of the most manipulative and deadliest women I've seen. She's so cold-hearted, calculator and seductive.

The plot was really engaging and thrilling and I liked its twists. I really like movies where the characters try to get away with murder. I definitely wanna check more of this director soon.