A circus-performer-turned-PI who's also "the most engaging criminologist to appear in decades" must save his brother from a cult and a terrorist plot (Booklist).   With a genius IQ, a past career as a circus acrobat, and a black belt in karate, criminology professor Dr. Robert Frederickson--better known as "Mongo the Magnificent"--has a decidedly unusual background for a private investigator. He also just so happens to be a dwarf.   After a series of traumas and an accidental poisoning, Mongo's brother, Garth Fredrickson, is lying unresponsive in an off-limits government psychiatric facility. But that won't stop New York City's most resourceful private eye--because if there's one person in the world Mongo would do anything for, it's Garth.   With a little unorthodox therapy, Mongo manages to bring his brother back to the real world. But it quickly becomes clear that Garth isn't himself. Soon the siblings are estranged, and Garth ends up in the center of a cult--an unsuspecting pawn in an international terrorist plot. Up against thousands of believers willing to do anything to protect their "new Messiah," Mongo will risk his life to save him . . .   The Cold Smell of Sacred Stone is the 6th book in the Mongo Mysteries, but you may enjoy reading the series in any order.