Texas Northern and Arizona Southern RR's special investigator Quist, ends up in a variety of blind alleys, as he reads signs of a recent train wreck, tries to trace the killer of the owner of Thunderbird Ranch, protect himself from being framed for the murder of the Sheriff and evade the murderous attempts of sadistic trigger-man Veit. Quist hardfists and quicksheets his way to an involved solution. Combination western-detective, this is action-plus reading with smooth touches.