The most intriguing thing about Windfall is that it makes us want to know more about the trio of characters played by Plemons, Collins, and Segel by the time the credits roll. In the beginning, Windfall puts across a largely harmless hostage situation featuring these nameless characters, but as it progresses, we get to know there's more to it than what meets the eye. The film is coated in bits of wry humor, primarily thanks to Plemons' arrogant billionaire feat and his shunning of the world filled with freeloaders and nobodies. It then makes complete sense when you see Segel being credited as "Nobody."
The score by Danny Bensi & Saunder Jurriaans is a crucial piece of this puzzle, intensely punctuating almost every scene. Director Charlie McDowell treats us to a dark, twisted climax that not only makes the most sense, given all we know about the trio, but it also gives Lily Collins her shining moment! I understand that Windfall isn't as conventionally funny or thrilling as most of us would've wanted, but I'm glad the director chose the slow-burn route for this subject.