Marcia Mae JonesBetty - Fender's Secretary Douglas FowleyFrederick P. 'Fred' Fender William ForrestDeputy Fire Chief / Narrator Steve PendletonMurph, the undercover man (as Gaylord Pendleton) Byron FoulgerThomas Peyson Emmett VoganAl, Night Watchman Richard DavidJunior Peyson John ForsytheRace Track Aannouncer (voice, uncredited) William StephensProductor Joseph KishSet Decoration Martin ObzinaArt Direction Carl BergerDirector Of Photography Melville ShyerAsistente de dirección Raoul KraushaarCompositor de música original William Randall Sr.Sound Mixer Frank W. MoranSound Mixer 
