- When harriet rean discovers that she has yet one more lost aunt—a cowgirl named Formica—she jumps at the chance to join her two detective aunts as they help Aunt Formica catch a band of devious cattle rustlers. But the Wild West carries dangers all its own ...A perfect choice for young readers, this charming mystery from bestselling novelist Afexander McCall Smith will keep kids guessing—and laughing—from the first clue to the last."Combines humor and intrigue. . . . Smith adds ample comic twists to keep kids entertained. Publishers Weekly