TLDR: He Walked by Night wasn’t just inspired by a true story, it was based closely enough on a real 1946 Los Angeles manhunt that the film’s ending happened almost exactly the way it did in real life. It also happened to change television forever, because the actor playing a minor forensics role on set walked away with an idea that became Dragnet.
He Walked by Night premiered on November 24, 1948, a low-budget film noir from Eagle-Lion Films directed by Alfred L. Werker, with an uncredited Anthony Mann handling a significant portion of the work.
Richard Basehart starred as Roy Morgan, a cold, technically brilliant burglar who kills a police officer and eludes an entire city’s police force by listening in on their own radio frequencies.
Cinematographer John Alton shot the film in a stark, high-contrast style that’s still studied as a textbook example of noir visual technique, and the semi-documentary narration style, complete with the line “only the names have been changed to protect the innocent,” directly set the template for the show it would go on to inspire.
The Real Killer Was a Caltech-Trained Police Radio Dispatcher
The film was based on the real 1946 crime spree of Erwin Walker, known to the press as “Machine Gun” Walker, a former civilian radio dispatcher for the Glendale Police Department who’d studied at Caltech and served as a decorated radar officer on Okinawa during World War II.
He returned from the war deeply disturbed, convinced he’d caused the deaths of men in his own unit, and his crime spree began even before his formal discharge.
Using his own technical training, Walker built and modified weapons, monitored police radio frequencies to stay a step ahead of patrols, and evaded capture twice by escaping through the same underground storm drain system the film later restaged for its climax.
He shot and wounded two LAPD detectives in one encounter and killed California Highway Patrol officer Loren Roosevelt in June 1946.
He was finally caught six months later after boasting about his crimes to his girlfriend, who confessed what she knew to a Catholic priest, who alerted police.
Walker was found guilty and later diagnosed with paranoid schizophrenia; his death sentence was ultimately not carried out, and he served time in prison before being paroled in 1974, after which he changed his name and worked quietly as a chemist until his death in 1982.
A Small Role on This Set Led Directly to Dragnet
Jack Webb played a minor forensics specialist in He Walked by Night, and it was on this specific set that he had the idea that would define the rest of his career.
Watching the production dramatize real LAPD case files convinced him a series built entirely around authentic police procedure could work as its own show.
That idea became Dragnet, first as a radio series in 1949 and then as television’s original police procedural. You can read the full story of that show and its cast, including Webb’s own unusual death and burial honors, in our full guide to Dragnet and our dedicated piece on Jack Webb.
Its Star Never Quite Became Famous, Then Became Famous Anyway
Richard Basehart spent the 1950s building a genuinely serious European film career, starring as the doomed clown Il Matto in Federico Fellini’s La Strada and playing Ishmael in John Huston’s Moby Dick.
Real Hollywood stardom mostly eluded him during those years despite the acclaim.
Television eventually gave him the recognition his film career hadn’t, casting him as Admiral Harriman Nelson on Voyage to the Bottom of the Sea from 1964 to 1968.
He also became a real animal rights advocate, co-founding the charity Actors and Others for Animals with his third wife, Diana, after the two witnessed a dog thrown from a moving vehicle on a Los Angeles freeway.
His first wife, Stephanie Klein, died suddenly of a brain tumor in 1951 while Basehart was in the middle of filming Fourteen Hours, and he finished the production anyway.
His own death carried an eerie symmetry: his last professional work was narrating the closing ceremony of the 1984 Los Angeles Olympics, reciting a line that included the phrase “when the end comes, the loss of flame brings darkness.”
He suffered the first of several strokes the very next morning and died on September 17, 1984, at age 70.
Scott Brady, who played lead detective Sgt. Marty Brennan, kept working steadily in film and television for decades afterward, remaining a familiar supporting presence in Westerns and crime dramas well into the 1970s and 80s.
He Walked by Night, Frequently Asked Questions
Is He Walked by Night based on a true story?
Yes. It’s based closely on the real 1946 crime spree of Erwin “Machine Gun” Walker, a former police radio dispatcher who killed a California Highway Patrol officer and evaded capture for months using his own technical training.
How did He Walked by Night inspire Dragnet?
Jack Webb played a small forensics role in the film and, watching its dramatization of real LAPD case files, developed the idea for a series built entirely around authentic police procedure, which became Dragnet the following year.
How did Richard Basehart die?
He died on September 17, 1984, at age 70, following a series of strokes. His final professional work, narrating the 1984 Olympics closing ceremony, took place the night before his first stroke.
What happened to the real Erwin Walker?
He was captured in late 1946, diagnosed with paranoid schizophrenia, and eventually served time in prison rather than being executed. He was paroled in 1974, changed his name, and worked as a chemist until his death in 1982.
