Deal Journal has yet to read "The Big Short," Michael Lewis's yarn on the financial crisis that hit stores today. We did, however, read his acknowledgments, where Lewis praises "A.K. Barnett-Hart, a Harvard undergraduate who had just written a thesis about the market for subprime mortgage-backed CDOs that remains more interesting than any single piece of Wall Street research on the subject."

While unsure if we can stomach yet another book on the crisis, a killer thesis on the topic? Now that piqued our curiosity. We tracked down Barnett-Hart, a 24-year-old financial analyst at a large New York investment bank. She met us for coffee last week to discuss her thesis, "The Story of the CDO Market Meltdown: An Empirical Analysis." Handed in a year ago this week at the depths of the market collapse, the paper was awarded summa cum laude and won virtually every thesis honor, including the Harvard Hoopes Prize for outstanding scholarly work.

Last October, Barnett-Hart, already pulling all-nighters at the bank (we agreed to not name her employer), received a call from Lewis, who had heard about her thesis from a Harvard doctoral student. Lewis was blown away.

"It was a classic example of the innocent going to Wall Street and asking the right questions," said Mr. Lewis, who in his 20s wrote "Liar's Poker," considered a defining book on Wall Street culture. "Her thesis shows there were ways to discover things that everyone should have wanted to know. That it took a 22-year-old Harvard student to find them out is just outrageous."

Barnett-Hart says she wasn't the most obvious candidate to produce such scholarship. She grew up in Boulder, Colo., the daughter of a physics professor and full-time homemaker. A gifted violinist, Barnett-Hart deferred admission at Harvard to attend Juilliard, where she was accepted into a program studying the violin under Itzhak Perlman. After a year, she headed to Cambridge, Mass., for a broader education. There, with vague designs on being pre-Med, she randomly took "Ec 10," the legendary introductory economics course taught by Martin Feldstein.