Movies like The Secret of 421 (1938)
The best movies like The Secret of 421 (1938) are Cop or Hood (1979), Gotcha! (1985) and LaRoy, Texas (2024). If The Secret of 421 hooked you with its comedy and thriller, these 20 similar films are what to watch next, and every pick says why it matches.
Quick picks
- Highest ratedBuffet Froid (1979)7.0/10 from 359 votes
- NewestHostile Takeover (2025)Released 2025
- In FrenchCop or Hood (1979)Also in French
Cop or Hood (1979)
When the local police inspector was found dead in a prostitute's house, police division commissioner Stan Borowitz is sent to investigate the situation. Posing as the prostitute's long-lost brother "Antonio Cerruti," he discovers a mare's nest of police corruption. In fact, in this comedy thriller the whole town is corrupt. If they were closely examined, Stan's methods for pursuing this investigation might embarrass the police. For instance, he drives into a criminal's house in a fancy, expensive race car. In another incident, he callously blows up a casino owned by Musard , one of the town's crime bosses. On that occasion, he first forces Musard to remove his clothes, and the poor criminal watches his casino explode from across the square while standing naked in a phone booth. Meanwhile, Stan seduces the lovely Edmonde.
Why it matches: Recommended by TMDB viewers · both comedy & thriller
Popcorn FlickMovies like thisGotcha! (1985)
A student on a trip to France is tricked into smuggling secrets across the Iron Curtain by a sexy spy.
Why it matches: Recommended by TMDB viewers · both comedy & thriller
Popcorn FlickMovies like thisLaRoy, Texas (2024)
Broke and depressed, Ray is mistaken for a dangerous hitman and given an envelope of cash. Along with his P.I. friend Skip, he must escape the actual hitman to make it out of LaRoy alive.
Why it matches: Recommended by TMDB viewers · both comedy & thriller
Popcorn FlickMovies like thisThe Wrong Guy (1997)
Nelson Hibbert expects to become the new president of Nagel Industries, but Mr. Nagel gives the promotion to another employee. When Nelson barges into Nagel's office to confront him, he finds Nagel's been murdered. Fearing that he will be implicated, Nelson decides to run from the law...despite the fact that the police already know the killer's identity.
Why it matches: Recommended by TMDB viewers · both comedy & thriller
Popcorn FlickMovies like thisSelf Reliance (2024)
When a man is offered a million dollars to play a game in which hunters try to kill him, he thinks he has found the perfect loophole: they can only attack when he’s alone. His only problem is that none of his friends or family believe the game is real. Forced to seek companionship in unexpected places, he navigates the bizarre challenge with humor, paranoia, and a surprising search for connection.
Why it matches: Recommended by TMDB viewers · both comedy & thriller
SnoozefestMovies like thisHostile Takeover (2025)
Follows Pete, a professional hitman, as he faces a group of assassins after the boss of a crime syndicate suspects disloyalty due to his attendance at Workaholics Anonymous meetings.
Why it matches: Recommended by TMDB viewers · both comedy & thriller
Popcorn FlickMovies like thisBuffet Froid (1979)
Alphonse Tram is unwittingly involved in several murders despite having no memory of committing the crimes. His confusion lead him to confess to his neighbour, Inspector Morvandieu. Alphonse and Morvandieu become the axis around which murders occur.
Why it matches: Recommended by TMDB viewers · both comedy
Worth the HypeMovies like thisThe Takedown (2022)
Ousmane Diakité and François Monge are two cops with very different styles, backgrounds and careers. The unlikely pair are reunited once again for a new investigation that takes them across France. What seemed to be a simple drug deal turns out to be a much bigger criminal case wrapped in danger and unexpected comedy.
Why it matches: Recommended by TMDB viewers · both comedy
Popcorn FlickMovies like thisThe Last Deadly Mission (2008)
A washed-up Marseilles cop (Auteuil) earns a chance at redemption by protecting a woman from the man who killed her parents as he is about to be released from prison.
Why it matches: Recommended by TMDB viewers · both thriller
Popcorn FlickMovies like thisThe Best Man (2023)
Mercenaries seize control of a remote resort hotel during a wedding and it's up to the best man, the groom and their drunken best friend to stop the terrorists and save the hostages.
Why it matches: Recommended by TMDB viewers · both thriller
Popcorn FlickMovies like thisDeath of a Corrupt Man (1977)
In the middle of the night, deputy Philippe Dubaye wakes up his old friend Xavier Maréchal with disturbing news: he has just killed Serrano, a racketeer with extant political connections. Serrano kept proofs of Dubaye's involvement in corrupt dealings and was poised to use them against the deputy. Xavier readily agrees to cover up for his old pal Philippe, but he soon runs into difficulties. Nobody believes Dubaye's alibi. And everybody -- influential personalities, powerful businessmen, dubious go-betweens and the police -- wants to get hold of the documents that served to blackmail Dubaye; by all possible means...
Why it matches: Recommended by TMDB viewers · both thriller
Popcorn FlickMovies like thisSong of the Thin Man (1947)
While attending a glamorous jazz cruise on New York’s East River, Nick and Nora Charles witness the fatal shooting of a wealthy patron. When suspicion falls on a young bandleader and his musicians, the couple steps in to clear their friends and uncover the real killer. Their investigation leads through a lively world of jazz clubs, radio personalities, high society, and backstage rivalries, where almost everyone has a secret and the next clue may be hidden in the music.
Why it matches: Recommended by TMDB viewers · both comedy
Popcorn FlickMovies like thisThe Gentleman from Epsom (1962)
The story takes place in the racecourses around Paris. A so-called major sells his tips to naive characters.
Why it matches: Recommended by TMDB viewers · both comedy
Popcorn FlickMovies like thisUnit 234 (2024)
While working the night shift alone, Laurie Saltair discovers a comatose man, Clayton, in Unit 234 of her family’s storage facility. What transpires is a thrill ride of a cat-and-mouse game for Laurie and Clayton to survive the night.
Why it matches: Recommended by TMDB viewers · both thriller
Popcorn FlickMovies like thisGuardian Angels (1995)
A sleazy Paris nightclub owner and ex-detective flies to Hong Kong to rescue the young son of a friend murdered by the Chinese mob.
Why it matches: Recommended by TMDB viewers · both comedy
Popcorn FlickMovies like thisOne Night at McCool's (2001)
On an ordinary night, in an ordinary part of town, a beautiful young woman walks into a bar. Her name is Jewel, and before long she is chatting to bartender Randy. The pair leave together, but he ends up getting into a tussle with her criminal boyfriend, who she then shoots dead, later persuading Randy to take the rap for her. But this isn't the end of it, as both Randy's cousin Carl and the detective assigned to the murder case also fall for Jewel's charms and find themselves caught up in the ensuing events. It seems that any man who meets Jewel falls instantly in love with her, and she's going to use this fully to her own advantage, leaving a trail of havoc in her wake. It also seems that she is going to get away with it - that is, until Randy decides to hire a hitman...
Why it matches: Recommended by TMDB viewers · both comedy
SnoozefestMovies like thisJoy House (1964)
A small-time con man on the run from his girlfriend's gangster husband hides out in a strange, brooding mansion run by two mysterious women, where he finds himself trapped in deception between the two.
Why it matches: Recommended by TMDB viewers · both thriller
Popcorn FlickMovies like thisUmbrella Coup (1980)
Grégoire Lecomte, the unlucky actor anxious to find a "real job", goes to take a screen test for a role of a killer, but gets to mafiosi by mistake. He takes their don for a producer, and they mistake him for a hitman with whom they had an appointment. Deluded Lecomte signs contract with them. He is supposed to kill gun dealer Otto Krampe at his birthday party in Saint-Tropez by piercing him with a cap of the umbrella with a built-in syringe with potassium cyanide. Lecomte is not aware that it has to be a real murder.
Why it matches: Recommended by TMDB viewers · both comedy
Popcorn FlickMovies like thisLights Out (2024)
A drifting ex-soldier turns underground fighter with the help of a just-released ex-con, pitting him against corrupt cops and hired killers now gunning for him and all those he cares about.
Why it matches: Recommended by TMDB viewers · both thriller
Worth the HypeMovies like thisFun with Dick and Jane (1977)
When an upwardly mobile couple find themselves unemployed and in debt, they turn to armed robbery in desperation.
Why it matches: Recommended by TMDB viewers · both comedy
Popcorn FlickMovies like this
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Frequently asked questions
What are the best movies like The Secret of 421?
The closest matches to The Secret of 421 are Cop or Hood (1979), Gotcha! (1985) and LaRoy, Texas (2024). Below are 17 more, each with the reason it matches.
What should I watch after The Secret of 421?
Start with Cop or Hood (1979), the closest match to The Secret of 421.
What is the highest-rated movie like The Secret of 421?
Buffet Froid (1979), rated 7.0/10 by 359 TMDB users.
What is the newest movie like The Secret of 421?
Hostile Takeover (2025) is the most recent release on this list.
Are there French movies like The Secret of 421?
Yes: Cop or Hood (1979), Buffet Froid (1979) and The Takedown (2022).
How are movies similar to The Secret of 421 chosen?
First come films that Trakt’s viewers watch alongside The Secret of 421, then TMDB’s recommendations and films it rates as similar in story and genre. Each pick says which signal put it there.