Best movies like The Key

Bob Sharkey, an instructor of would-be spies for the Allied Office of Strategic Services, becomes suspicious of one of the latest batch of students, Bill O'Connell, who is too good at espionage. His boss, Charles Gibson confirms that O'Connell is really a top German agent, but tells Sharkey to pass him, as they intend to feed the mole false information about the impending D-Day invasion.

In the 19th century, an expert marine biologist is hired by the government to determine what's sinking ships all over the ocean. His daughter follows him. They are intercepted by a mysterious captain Nemo and his incredible submarine.

A United States Navy ship in the first half of the 19th century, under the command of Captain David Porter, is expecting to put ashore after a year on the seas; but the arrival of one of Porter's ex-students, the willful and independent Lieutenant David Farragut, brings a new mission: to disguise the ship and crew as a pirate ship and help the Navy locate the criminals who have been robbing America's merchant fleet. But as Farragut's disobedience threatens the safety of the crew, they stumble upon an international conspiracy.

In the midst of World War II, the battle under the sea rages and the Nazis have the upper hand as the Allies are unable to crack their war codes. However, after a wrecked U-boat sends out an SOS signal, the Allies realise this is their chance to seize the 'enigma coding machine'.

Merchant seaman Archie Gibbs manages to survive when his ship is torpedoed by a German submarine. Disguising himself in the uniform of a dead Nazi spy, Gibbs is picked up by the Nazi U-boat. He manages to convince the German sailors that he's the spy, and in this guise he tries to rescue a group of captured Allied scientists.

Lieutenant Braden discovers that Sally, the woman he's been falling in love with, has actually been checking out his qualifications to be a U.S. Navy frogman. He must put his personal life behind him after being assigned to be smuggled into a Japanese-held island via submarine to photograph radio codes.

When the crew of an American tugboat boards an abandoned Russian research vessel, the alien life form aboard regards them as a virus which must be destroyed.

A World War II drama-documentary showing the struggles of Merchant Navy seamen following an attack by a U-Boat. Western Approaches is a vast area of ocean control covering thousands of square miles of the Atlantic. In these waters is set this single incident in the fiercest and longest sea battle in history. The players are not professional actors but serving officers and men of Allied Navies and Merchant Fleets. This film is dedicated to them and their comrades who made the Allied victory possible.

On the tropical island of Wongo, a tribe of beautiful women discover that the other side of the island is inhabited by a tribe of handsome men. They also discover that a tribe of evil ape men live on the island, too, and the ape men are planning a raid on the tribe in order to capture mates.

Follow-up to Andy Griffith's big hit in "No Time for Sergeants" moves the action to the Coast Guard and WW II.

A World War II submarine commander finds himself stuck with a damaged sub, a con-man executive officer, and a group of army nurses.

A bumbling gang of thieves crash a jazz party.

In England during WWII, an American news correspondent’s affair with a married British correspondent ends tragically when he is killed in action. Fearing a nervous breakdown as a result of his death, she travels to Cornwall to mourn with his family without any intention of revealing her relationship with him.

In the dark silence of the sea during World War II, the submarine USS Tiger Shark prowls on what should be a routine rescue mission. But for the shell-shocked crew, trapped together in the sub's narrow corridors and constricted spaces, this is about to become a journey into the sensory delusions, mental deceptions and runaway fears that lurk just below the surface of the ocean.

After "The Poseidon Adventure", in which the ship got flipped over by a tidal wave, the ship drifts bottom-up in the sea. While the passengers are still on board waiting to be rescued, two rivaling salvage parties enter the ship on search for money, gold and a small amount of plutonium.

A tale of life on board a Royal Navy cruiser assigned to protect the vital convoys between America and England during WWII.

At the start of World War II, Cmdr. Ericson is assigned to convoy escort HMS Compass Rose with inexperienced officers and men just out of training. The winter seas make life miserable enough, but the men must also harden themselves to rescuing survivors of U-Boat attacks, while seldom able to strike back. Traumatic events afloat and ashore create a warm bond between the skipper and his first officer

A first-time captain leads a convoy of allied ships carrying thousands of soldiers across the treacherous waters of the “Black Pit” to the front lines of WW2. With no air cover protection for 5 days, the captain and his convoy must battle the surrounding enemy Nazi U-boats in order to give the allies a chance to win the war.

A team of allied saboteurs are assigned an impossible mission: infiltrate an impregnable Nazi-held island and destroy the two enormous long-range field guns that prevent the rescue of 2,000 trapped British soldiers.

The story of the miraculous evacuation of Allied soldiers from Belgium, Britain, Canada and France, who were cut off and surrounded by the German army from the beaches and harbour of Dunkirk between May 26th and June 4th 1940 during World War II.

The crew of the American destroyer escort, the USS Haynes, detects a German U-Boat—resulting in a prolonged, deadly battle of wits.

A seedy London promoter turns a naive, working-class teenager into a pop singing sensation.

The USS Neptune, a nuclear submarine, is sunk off the coast of Connecticut after a collision with a Norwegian cargo ship. The navy must attempt a potentially dangerous rescue in the hope of saving the lives of the crew.

Milquetoast Henry Limpet experiences his fondest wish and is transformed into a fish. As a talking fish he assists the US Navy in hunting German submarines during World War II.

As the Second World War breaks out, German freighter captain Karl Ehrlich is about to leave Sydney, Australia with his vessel, the Ergenstrasse. Ehrlich, an anti-Nazi but proud German, hopes to outrun or out-maneuver the British warship pursuing him. Aboard his vessel is Elsa Keller, a woman Ehrlich has been ordered to return to Germany safely along with whatever secrets she carries. When Ehrlich's fiercely Nazi chief officer Kirchner commits an atrocity, the British pursuit becomes deadly.

The Mediterranean, 1941/42 - Axis forces are using frogmen and manned torpedoes to attack previously impregnable harbours. The Allied forces need to come up with something to answer this threat, which they find in the form of Lt. Lionel "Buster" Crabb.

A tugboat captain serves under his rival as a U-boat chaser in World War I.

Two rival tugboat captains compete for local business.

When her parents are drowned at sea, "Princess" Judy is adopted by a soft-hearted old sea captain, Captain Zack, and brought to live on his tugboat.

A rogue submarine captain pulls together a misfit crew to go after a sunken treasure rumored to be lost in the depths of the Black Sea. As greed and desperation take control on-board their claustrophobic vessel, the increasing uncertainty of the mission causes the men to turn on each other to fight for their own survival.

When a neutral Danish merchant ship is forced to put into port after trying to evade British wartime contraband control, its captain becomes involved in a beautiful British Naval Intelligent agent's efforts to capture a group of German spies operating from a London cinema.

Two-fisted newsreel photographer Johnny Williams is stationed in Burma and China in the early stage of WW II. Captured by the Japanese, he escapes from a concentration camp with the aid of beautiful, enigmatic 'China Girl' Miss Young. The two arduously make their way back to friendly lines so that Johnny can deliver the vital military information he's managed to glean from his captors.

A girl, Carol whom the audience is quickly informed "has been around," and her father arrive to take over the business management of an island in the Bahamas owned by Adrian Ainsworth, descendant of many ancestors who have handled it over the years to the satisfaction of its 250 native residents. He is married to a woman who stays away from the island because she is lonely when there. Adrian doesn't want Carol or her father there, and they don't want to be there. Romance can't be lurking far behind the beautiful sunset.

A bitterly jealous sponge fisherman tries to sabotage a fellow diver.

Buster Crabbe and Johnny Weissmuller battle it out in Cajun country! Johnny, a riverboat pilot on the Mississippi, is seduced away from his fiance (Carol Thurston) by a rich outsider (Virginia Grey) who's nursed him back to health after a serious accident. She owns a large piece of the swamp and has outlawed hunting on her property. His rival Mike (Crabbe) is a trapper who harbors deep resentment for Johnny and his new wealthy friends. When he feels Johnny is responsible for the hunting ban, he resorts to destructive acts of vengeance.

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.

Landing on a small island not far from Havana, Cuba, Lt. Cmdr. Ben Staves joins a Navy scientific project engaged in finding an effective shark repellent to help save the lives of WWII military personnel stranded in shark-infested waters. His zeal for completing the project as fast as possible is explained by his having lost a large percentage of his crew to sharks when his ship was sunk by the Japanese. Against the advice of the others on the project, Staves demands that the new repellent be tested on a live subject surrounded by hungry sharks and will allow no one but himself to be the test subject!

A war drama of motor torpedo boats which did much unsung work in WW2, but the naval battles merely provide an exciting story in which an even more special romantic drama is wrapped up.

Six friends, all hoping to become aviators, are to graduate the next day from the United States Naval Academy. When the officer of the day becomes sick, Tommy Winslow has to take his place, while the others go out and celebrate.

The dashing but arrogant Prince Michael Fedor Lubimoff has to flee Tsarist Russia after falling into disgrace and settles in Monte Carlo, where he resumes his life of debauchery while World War I ravages the fields of Europe… (Partially lost film; reels 3 and 9 of a total of 11 are missing.)

British drama documentary from 1943, based on the true story of the 1940 rescue of the tanker MV San Demetrio by parts of her own crew after she had been set afire in the middle of the Atlantic by the German heavy cruiser Admiral Scheer and then had been abandoned. When one of the lifeboats drifted back to the burning tanker the day after, and found that she still hadn't exploded, they decided to board her and put out the fires. Eventually, they managed to start the engine again and decided to try to reach Britain against all odds.

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.

Inspired by the real-life German special operations unit KG 200 that shot down, repaired, and flew Allied aircraft as Trojan horses, "Wolf Hound" takes place in 1944 German-occupied France and follows the daring exploits of Jewish-American fighter pilot Captain David Holden. Ambushed behind enemy lines, Holden must rescue a captured B-17 Flying Fortress crew, evade a ruthless enemy stalking him at every turn, and foil a plot that could completely alter the outcome of World War II.

During the last days of World War II, Germany, desperate for any last grasp to defeat the allied powers, looked to their last remaining weapons and soldiers. The German Navy and the last remaining U-Boats were formed together for one desperate last mission – a mission to attack the United States Homeland, known as Operation Seawolf. Captain Hans Kessler, a grizzled submarine commander from both World Wars, is called into service to make one mission a success and help turn the tide of the war.

True story of the sinking of the U.S.S. Indianapolis, its crew's struggle to survive the sharks and exposure, and the captain's scape-goat court-martial.

At the height of WWII, the Atlantic Ocean becomes a deadly battleground as an American torpedo boat fights against the constant bombardment of German forces.

An alcoholic captain sails a two-master through danger with a call girl and others on board.

After the events of The African Queen (1951), Charlie and Rose are recaptured by the Germans and forced to tug one of their big cannons that could bring the Nazis victory against the local Allied forces.

A man goes on the run from hardened smugglers.

In a small Southern town in the autumn of 1941, Sophie’s lonely life is transformed when an Asian man arrives under mysterious circumstances. Their love affair becomes the lightning rod for long-buried conflicts that erupt in bigotry and violence with the outbreak of World War ll.