Best movies like The Hun Within

The Unseen Enemy in this wartime meller is Nick (Leo Carrillo), the outwardly effusive manager of a San Francisco waterfront café. To make enough money to ensure his daughter Gen's (Irene Hervey) entree into society, Nick sells his services to a gang of foreign spies, who then use Nick's establishment as a rendezvous point. The plan is to covertly send out a Japanese vessel for the purpose of raiding and destroying American merchant ships. The spies' secret code is hidden in the lyrics of a song called "Lydia", which the unwitting Gen performs on request day after day.

The Unwritten Code is an offbeat, better-than-average Columbia wartime "B" picture. Though Ann Savage and Tom Neal are top-billed, the central character is supporting-actor Roland Varno. He plays a Nazi spy who sneaks into the U.S., hoping to release hundreds of German prisoners. He fails, but not until plenty of bullets have been spent. The most interesting aspect of The Unwritten Code is the casting of Savage and Neal as the "good" characters: in 1945, these two cult favorites would play the decidedly unsavory protagonists of the film noir classic Detour.

A Nazi spy passes himself off as an optometrist in San Francisco's waterfront district. Someone robs him of his code book, and he must get it back.

Humble stamp dealer Otto Becker has little to do with international politics, so when he receives a surprise visit from his estranged twin brother and Nazi spy, Baron Hugo von Detner, his world is thrown into turmoil. Threatening Becker with deportation, Hugo forces him to use his shop as a front for espionage.

Detective Nick Carter is brought in to foil spies at the Radex Airplane Factory, where a new fighter plane is under manufacture.

A US intelligence officer, stationed in Germany, is caught in a political dilemma when the Russians kidnap a young Army private, the son of prominent American businessman. In exchange for the soldier's return, the Russians attempt to barter a trade for an elderly German couple who they want for treason.

In order to help bring Nazis to justice, U.S. government agent T.R. Devlin recruits Alicia Huberman, the American daughter of a convicted German war criminal, as a spy. As they begin to fall for one another, Alicia is instructed to win the affections of Alexander Sebastian, a Nazi hiding out in Brazil. When Sebastian becomes serious about his relationship with Alicia, the stakes get higher, and Devlin must watch her slip further undercover.

After assisting the French Underground during WWII, an American Officer is later accused of murder and subversive activities by former colleagues. Based on the actual exploits of Lieutenant Colonel Peter Ortiz.

Expatriate Englishman Jim Wormold lives in pre-revolutionary Havana with his teenage daughter. Owning a poorly-performing business, he accepts an offer from the British Secret Service to recruit a network of agents in Cuba. Wormold hasn't got a clue where to start, so he decides to manufacture a list of agents and provide fictional tales for his masters in London, and is soon known as the best agent in the Western Hemisphere. However, it all unravels when the local police decode his cables and start rounding up his 'network' and he learns that he's the target of a group out to kill him.

A man tries to redeem himself after ducking out on his comrades before the fatal attack.

In a bold coup a Palestinian terrorist group captures the yacht Rosebud and kidnaps the millionaires five daughters on it. At first they demand film clips to be shown on major European TV stations. Undercover agent Martin is hired to hunt the terrorists down.

Broadway gamblers stumble across a plan by Nazi saboteurs to blow up an American battleship.

Screen superstars Clark Gable ("Gone With The Wind," "It Happened One Night") and sultry bombshell Lana Turner ("Peyton Place," "The Postman Always Rings Twice") team-up in this intriguing WWII drama. Suspected of being a Nazi spy, Dutch-resistance member Turner is given a last chance mission to redeem herself. Gable is an American colonel who falls in love with her. Co-starring Victor Mature ("My Darling Clementine") and Oscar-nominee Louis Calhern ("The Asphalt Jungle").

FBI agent Ed Renard investigates the pre-War espionage activities of the German-American Bund.

Blacklisted in modern day WW2, a Swedish oil trader opts to assist British Allies, by means of infiltrating and surveying Nazi Germany.

Blind detective Duncan Maclain gets mixed up with enemy agents and murder when he tries to help an old friend with a rebellious stepdaughter.

World War I. Lili Smith is a beloved British music hall singer, often providing inspiration for the British and French troops and general populace singing rallying patriotic songs. She is also half German and is an undercover German spy, using her feminine wiles to gather information from the high ranking and generally older military officers and diplomats she seduces.

World War I brings tribulations to an American woman married to a German.

A young wife is becoming very distraught over the fact that her husband, a secret service "spy" for England, has changed his mind about transferring away so that he can spend more time with her and their young son. He has grown cold and distant towards her; she thinks it 's because of the secretiveness of his work. Meanwhile, an American spy comes to England and is induced to help the British "team" with an undercover spy ring. When this spy ring is over turned the "bugs" that crawl out from under its rock shocks everyone!

The US Government tries to track down embedded Nazi agents in the States.

Right before his daughter's wedding, a mild-mannered foot doctor discovers that his new in-laws are international smugglers.

Maria is married to Captain Franck of German Intelligence. He does not know she is a Russian assigned to spy on him. When he is told to uncover a leak, he vows revenge on his wife.

Spirited New Yorker Linda Voss goes to work for international lawyer and secret Office of Strategic Services operative Ed Leland just before World War II. As they fall in love, the United States enters the fight against Hitler, and Linda volunteers to work for Ed spying undercover behind Nazi lines. Assigned to uncover information about a German bomb, Linda also has personal motives to fulfill: discovering the fate of her Jewish family members in Berlin.

Engrossed in the perfection of a new high power explosive, the husband seems to neglect his wife. She is further piqued by the introduction into their home of a man whose presence is unexplained, but who is really a Secret Service operative guarding the invention. The Government has asked that the wife be kept in ignorance. In this frame of mind the wife lends a ready ear to Aachen, who suggests that the husband be taught a lesson by the abstraction of this all-absorbing formula. Through this means he gets the formula, but in the end the Government gathers him in, and the only permanent result is a needed lesson to the innocent little traitor.

A Newfoundland fishingboat comes to the aid of a wrecked Danish sailing ship and tows it to a small village, but eventually the captain of the fishingboat realises that it's a U-boat supply ship in disguise, loaded with torpedoes. So, together with his crew and a group of villagers he sets about a plan to blow the ship as well as any U-boats that approach it. Based on the novel "The Gaunt Woman" by Edmund Gilligan.

In this espionage movie, set in Washington during WW II, the daughter of an ex-senator has become a dress model. She is approached by an American counter-espionage agent who offers her a chance to serve her country. The carefree son of a naval official receives a similar offer. He is asked to secure secret Naval plans. Unbeknownst to them, the man they work for is actually a Nazi spy. The two dupes finally figure it out, and the spy kidnaps them. Somehow they escape and break up the spy ring.

FBI agents Carl Becker and John Trent raid a New York hotel, sending Nazi spies to an upstate hunting lodge.

G-Men in Washington break up a powerful spy ring and capture the ringleaders.

Wartime thriller with film noir elements based on a true story as written in A.P. Scotland's autobiography "The London Cage". The plot has greatly exaggerated the actual events of A.P. Scotland's experiences, including the addition of a fictional love interest.

SPYING TURNS TO SECURITY DETAIL AS A YOUNG COUPLE AVOIDS MURDER, THE MOB, AND THE PAST. Human cloning, surveillance, and a life threatening relationship take center stage in this romantic thriller. Re-Released in the fall of 2012, SPY tells the story of Dante LeClair (Vincent Pastore) who was forced by mob boss (Frank Vincent) to fund illegal and unethical medical experiments after his daughter Susan (Lora Kojovic) was injured.

A documentary about Kim Philby, a British member of MI6 who was in reality a spy and defected to the U.S.S.R.

Filmed in the months immediately following Pearl Harbor, 20th Century-Fox's Little Tokyo USA is 63 minutes' worth of speculation about prewar Japanese espionage activities. Los Angeles cop Preston Foster suspects that there's dirty work afoot in the city's Japanese community, but no one will believe him except for intrepid girl reporter Brenda Joyce. When the spies frame Foster on a trumped-up murder charge, Joyce does a little detective work herself. The enemy agents are rounded up just before they can do any real damage. Because of its strident insistence that most (if not all) Japanese-American citizens were secretly loyal to the Rising Sun, Little Tokyo USA is seldom seen these days.

It was the sister ship of the infamous Titanic... and its final destiny was the same. Experience the true untold story of Britannic, a tumultuous, epic voyage of human passion, courage and betrayal aboard an ill-fated ocean liner bound for a shattering demise. With the world at war, an undercover British agent (Amanda Ryan), embarks the Britannic in search of a German spy believed to be on board to sabotage the ship. Posing as a governess, the undercover agent finds herself falling in love with the ship's chaplain (Edward Atterton). In a stunning discovery, the lovers suddenly find themselves enemies of war. And when a massive explosion deals a deathblow to the ship, their battle becomes one for their own survival. With a dynamic, international cast and a story line that hosts a chilling tale of espionage, politics and romance, Britannic brings one of history's most devastating events to riveting, new life.

Judy King, newly arrived in Washington, applies for a secretary job with a government agency and while being interviewed by Bob Carlton, an agent with the bureau, jokingly hints she may be a spy. While investigating her, he clears Judy and falls in love with her... and then uncovers a real Nazi spy ring.

A conflicted teen lashes out by vandalizing equipment at the nuclear plant where his father works, then hits the road and finds a spiritual path.

A CIA agent and a geneticist battle to keep a deadly biological weapon from falling into the wrong hands when the weapon's inventor is kidnapped.

American naval forces are using a port in Iceland as a base for anti-submarine patrols to protect North Atlantic convoys from Nazi subs. The Nazis send undercover agents into the port in a scheme to blow up the entrance to the harbor and keep the patrols blocked in. The officers in charge of the patrols have to find the spies and stop them before they achieve their objective.

In the office of Major Northfield, the quartermaster of the Pacific Coast, a leak has been discovered which may endanger the safety of American transports that are secretly carrying troops across the Pacific. Nara-Nara, a Japanese detective, is assigned to the case because his country has guaranteed safety to these transport ships. Nara-Nara believes that Northfield is guilty, although in reality it is Northfield's secretary Kitty Little, a girl of German ancestry, who is passing information to Dr. Ebell Smith, a German agent. Nara-Nara falls in love with Kitty, but soon after discovers that she is the leak in the quartermaster's office.

Louis and August Siever, the twins sons of a German father and American mother, are traveling in Europe when war breaks out. August joins the Kaiser's army, but Louis, a supporter of the United States, is practically made a prisoner in Berlin for a year while he tries to prove his American citizenship. After a violent confrontation with Louis, August steals his brother's passport and leaves for New York with Gerda Anderson, a German spy.

A U.S. agent attempts to track down a spy ring working to destroy the Panama Canal.

Nazis chase a U.S. newsman (Robert Mitchum) paid to smuggle names of Greek resistance leaders to London.

In the waning days of WWI, a U.S. "Mystery Ship," sets sail for the coast of Spain towing a submarine. Their mission is to find and sink a U-boat that has been especially effective in attacking Allied shipping. Posing as a harmless schooner, the mystery ship is in fact fitted with a formidable gun capable of sinking a U-boat. Stopping in the Canary Islands to refuel, the crew interacts with locals involved with Germans, and with Germans themselves, including the sister of the U-Boat commander, who is lurking offshore waiting for the coming battle.

In this espionage caper, a government spy must keep enemy agents from spying upon a defense plant. His work is made easier by his newest invention, a word scrambler which makes it difficult for the enemy agent.

A letter from Jane, who is nursing British troops, asks Tarzan's help in obtaining a malaria serum extractable from jungle plants. Tarzan and Boy set out across the desert looking for the plants. Along the way they befriend a stranded American lady magician.

A forger is forced to work for a Nazi spy ring. His conscience gets the better of him, though, and he secretly conspires with the FBI to turn over the gang.

The life of American woman Mildred Gillars and her lawyer, who struggles to redeem her reputation. Dubbed “Axis Sally” for broadcasting Nazi propaganda to American troops during World War II, Mildred’s story exposes the dark underbelly of the Third Reich's hate-filled propaganda machine, her eventual capture in Berlin, and subsequent trial for treason against the United States after the war.

Based on a true incident that occurred in 1942 when nine Nazi saboteurs were put ashore on the coast of Long Island, New York, by submarine, with orders to blow up various defense installations.

During World War I, German spies will stop at nothing to spy on the allied war plans stored at Gibraltar.

A spy known as "1932" during World War I, is commissioned by the German Secret Service to trail English agent Captain Woodhouse to the Straits of Gibraltar and there effect the destruction of the British fleet. Before his departure, 1932 helps Jane Gerson, an American girl falsely accused of espionage, and later falls in love with her.

A hunt for a spy, in a hotel in the South of France just before World War Two.