Murder at the Margin (A Henry Spearman Mystery) by Jevons, Marshall published by Princeton University Press (1993)

Murder mysteries on the lush and tropical island of St. John is solved by a distinguished Harvard Economist Professor, Henry Spearman. The Professor is a small balding man, while the island police and other forces tries hard to solve the murders, the economist professor took it upon himself to help solve the mystery deaths using math theories and complex math calculations. If you love math, you'll definitely enjoy this Economics Mystery. You'll enjoy the mystery even if you don't like math.