The Riders of the Whistling Skull

A mysterious murder at an archeological expedition leads our heroes - those three prairie pals, The Three Mesquiteers - into some dangerous territory. Can they solve the murder without losing their own lives? With a cast including Robert Livingston, Ray Corrigan, Max Terhune, and Roger Williams, The Riders of the Whistling Skull pits our heroes against devil-worshiping Indians armed with poisoned arrows, walking mummies, and more!