Dragnet was an American radio series, enacting the cases of a dedicated Los Angeles police detective, Sergeant Joe Friday, and his partners. The series covered a range of crimes from check fraud and petty theft to more sensational topics like murder and drug abuse. "Truck Hi-jackers Tom Laval" is an episode of Dragnet that originally aired on October 1, 1949. Specific details about this episode's plot, key events, and guest appearances are unavailable. Given the episode title, it likely involves a case of truck hijacking.