The Master Key

Before the outbreak of WWII, Nazi sympathizers plot to undermine America.

Cast

Milburn Stone

as Agent Tom Brant

Jan Wiley

as Janet Lowe

Dennis Moore

as Jack Ryan

Addison Richards

as Gerhard Doenitz / Garret Donahue

Byron Foulger

as Prof. Elwood Henderson

Maris Wrixon

as Dorothy Newton

Sarah Padden

as Aggie

George Lynn

as Herman

Russell Hicks

as Police Chief Michael J. O'Brien

Roland Varno

as Arnold Hoffman

Reviews

Similar Movies

Bruce Gentry

Famed aviator Bruce Gentry is working with scientist Andrew Benson, setting out to uncover the origin of a deadly secret weapon---an electronically controlled flying disc which can be directed at moving or stationary targets. The disc was master-minded by an enemy agent known only as "The Recorder" because...he speaks entirely via recordings. Aided by rancher Frank Farrell and his sister Juanita "Nita" Hodges, Gentry consistently foils "The Recorders" schemes, which are carried out by "The Recorder's" henchmen, Krendon, Allen and Chandler, including an attack on the Panama Canal.

⭐ 8.0

Custer's Last Stand

Kit Cardigan seeks the killer of his father...among other plot threads leading up to the famous historical incident.

⭐ 4.5

Jungle Menace

Mystery and adventure, surrounding a stolen rubber harvest.

⭐ 5.0

The Mysterious Pilot

Jim Dorn endeavors to protect Jean McNain from a man she knows has committed a murder, Carter Snowden

⭐ 0.0

Flying G-Men

Four flying G-Men protect America against enemy spies; one of the four assumes the identity of The Black Falcon, to befuddle the saboteurs even further.

⭐ 6.0

The Spider's Web

Pulp hero "The Spider" seeks to destroy all criminals. In this serialized adventure, he battles The Octopus, who intends to replace the government of the United States.

⭐ 6.0

Mandrake the Magician

Mandrake and his team attempt to prevent "The Wasp" from stealing and using a new Radium invention.

⭐ 5.6

The Scarlet Horseman

Government agents work to interfere with schemes to trick the Comanches into war with the Texans.

⭐ 0.0

Mystery of the Riverboat

A movie serial in 13 chapters: Some swampland becomes valuable, and various factions squabble over ownership of it.

⭐ 6.0

Jesse James Rides Again

Jesse James wants to start a new life in a new location, but quickly finds himself wrapped-up in protecting townsfolk from the machinations of evil oilmen.

⭐ 0.0

The Strings of Steel

The Strings of Steel is a silent Action serial. Episode titles: 1. The Voice on the Wire 2. The First Central 3. Fighting for Love 4. The Power of Might 5. Kings of the Wire 6. Voice of the Continent 7. Telephone Poles 8. War of the Wire 9. When Lightning Strikes 10. Love and Victory.

⭐ 0.0

The Secret of the Submarine

An American adventure film serial comprised of fifteen episodes of two reels (24 min) each. All chapters are presumed lost.

⭐ 0.0

Dr. Mabuse, the Gambler

Dr. Mabuse and his organization of criminals are in the process of completing their latest scheme, a theft of information that will allow Mabuse to make huge profits on the stock exchange. Afterwards, Mabuse disguises himself and attends the Folies Bergères show, where Cara Carozza, the main attraction of the show, passes him information on Mabuse's next intended victim, the young millionaire Edgar Hull. Mabuse then uses psychic manipulation to lure Hull into a card game where he loses heavily. When Police Commissioner von Wenk begins an investigation of this mysterious crime spree, he has little to go on, and he needs to find someone who can help him.

⭐ 7.7

The Spider Returns

The evil and masked "Gargoyle" is sabotaging all of America's industrial plants. It is up to the Spider to save the country.

⭐ 8.7

The Girl and the Game

Irrepressible Helen Rhinelander, the daughter of a railroad president. A dastardly villain, Segrue, however, desires not only Helen but also the plans for a new railroad. Happily, Helen's childhood sweetheart, Paul Storm, now an engineer, is right there to protect the damsel-in-distress through the serial's 15 exciting chapters.

⭐ 0.0

The Shielding Shadow

The 15 chapter story involves the heroine being protected by a shadow with burning eyes. There's also a cloak of invisibility, some hypnotism and a giant octopus added to the mix.

⭐ 0.0

Scouts to the Rescue

Filmed in the Sierra Nevada mountains near Sonora, California, this Universal serial is Universal's 40th sound-era serial. Eagle Scout Bruce Scott, leader of Martinsville Troop Number One, and his pack sets off in search of lost treasure and finds adventure

⭐ 0.0

The Valley of Vanishing Men

Prospector Henry Tolliver disappears and his son "Wild Bill" Tolliver comes looking for him.

⭐ 0.0

The Adventures of Smilin' Jack

A movie serial in 12 chapters: The famous comic strip character is on a mission to protect a secret tunnel passage between China and India.

⭐ 5.0

The Lost Express

A train that is carrying the formula for a valuable form of granulated gasoline disappears before it reaches its destination. Railroad investigators and the authorities try to determine where it is and who took it.

⭐ 0.0