When Sam rescues an abused mare from outlaw horse rustlers, she knows she's done the right thing. But the ranch already has a full corral, and a long drought means the cattle are running out of grass. Of course her dad refuses to allow her to adopt another mustang. The frightened and dangerous mare is just beginning to trust Sam when the rustlers learn Sam is the one who told the authorities about their illegal wild horse trap. Now, it's up to Sam to keep the mare -- and herself -- safe.

Terri Farley​ is the best-selling author of books about the contemporary and historic West. Her most recent book ​Wild at Heart: Mustangs and the Young People Fighting to Save Them​ (Houghton Mifflin Harcourt) is a Junior Library Guild selection; winner of the Sterling North Heritage award for Excellence in Children's Literature; and has been honored by Western Writers of America, National Science Teachers Association, and American Association for the Advancement of Science. She is a recent inductee into the Nevada Writers Hall of Fame. Her ​Phantom Stallion​ (HarperCollins) series for young readers has sold over two million copies worldwide.