Remembered for his novel They Shoot Horses, Don't They?, author Horace McCoy began his writing career as a mainstay during the golden age of Black Mask Magazine, selling nearly 20 stories to editor Joseph T. Shaw. A former aviator, McCoy penned 14 gritty stories of Jerry Frost for Black Mask: a flying Texas Ranger, one of "Hell's Stepsons" who patrolled the border. It was McCoy's greatest work for the pulps prior to departing for a lengthy career as a scriptwriter. This edition collects the first half of the Frost series, most of which have never before been reprinted. Also including an all-new introduction by John Wooley.