On the trail of trouble

Nancy, Bess, and George can hardly believe their eyes when they arrive at the Black Hills Buffalo Ranch. Aside from the awesome natural scenery, Mount Rushmore National Memorial--with four larger-than-life U.S. presidents--towers nearby. But the girls have no time for sight-seeing: they've come to help Bess's friend Kincaid Turner find out who stole a baby buffalo named Justice from her father's ranch.