Canyon of Tears — John Dyson

For forty years, Mexican comancheros and Comanche Indians have brought terror to west Texas frontier settlements. Their latest victim, beautiful Rose Cahill, is snatched by the evil bandido Joaquin Terrazos. Only a few days before, Rose had lost her heart to the Texas Ranger Chas Dawson, but will he still want her after the comancheros have done with her? The US Army are refusing to help, so Captain Dawson enlists fourteen-year-old Pete Bowen and they go out alone to search for the girl.