"The Giant Pool of Money" by Alex Blumberg and Adam Davidson for This American Life
The first good breakdown of how the 2008 financial crisis actually happened. This is the story of complicated economic systems, but told through characters, examining the motivations and feelings of people at each step of the process. This approach makes the system concrete, relatable, and engaging as a narrative in a way that an abstract description of the flow of money can't do.
https://www.thisamericanlife.org/355/the-giant-pool-of-money