"Henry Spearman, the balding economics professor with a knack for solving crimes, returns in The Mystery of the Invisible Hand--a clever whodunit of campus intrigue, stolen art, and murder. Having just won the Nobel Prize, Spearman accepts an invitation to lecture at Monte Vista University. He arrives in the wake of a puzzling art heist with plans to teach a course on art and economics--only to be faced with the alleged suicide of womanizing artist-in-residence...