Murder on the Yellow Brick Road — Stuart M. Kaminsky

Someone had murdered a Munchkin. The corpse lay bleeding on the yellow brick road that leads to the land of Oz. Young and frightened starlet, Judy Garland summons private detective Toby Peters to the M.G.M sound stage. His assignment: keep the murder out of the papers and the studio free of scandal. Peters soon realizes, however, that Miss Garland's life is in danger. Then there's another murder -- and another. As Dorothy says in The Wizard of Oz, “People come and go so quickly here.”