Captain Midnight goes behind the Iron Curtain to the country of Balkavia. He is there to rescue Zabor, a freedom fighter. Midnight succeeds in his mission but at the final moment Zabor elects to remain in his own country and continue the fight for democracy.

The Secret Squadron laboratory is placed at the disposal of a scientist working on a heat-resistant metal needed by the Air Force. The research is stymied by a vindictive scientist who develops a sonic gun and hates the other scientist.

A group of gamblers try to bribe a star quarterback into throwing an important game. The young player is in need of cash for an operation for his sister, but he refuses to participate in the scheme. In retaliation, both the quarterback and Captain Midnight are kidnapped.

A munitions genius is released from jail and plots revenge against Captain Midnight and the police responsible for his conviction.

A gem warfare attack is planned against the United States by one of America's Cold War enemies. Captain Midnight is called upon to recover a missing formula which can protect the country from the virus.

Captain Midnight exposes a phony seance racket that preys upon a wealthy society women who is also the wife of a famous physicist. The professor has invented a device to harness the power of the sun. The seance racket is merely a scheme to obtain the Professor's invention.

The plans for a new jet engine under development at Secret Squadron headquarters attract one of the nation's top criminals. He pretends to surrender and gains access to Captain Midnight's laboratory and the plans for the new engine.

Captain Midnight and Ikky help a group of scientists trying to develop a process of converting volcanic heat into electricity. When a long-dormant volcano begins to erupt, research is disrupted and sabotage is suspected.

Captain Midnight and Ikky help a young Japanese boy find his missing father: a soldier hiding on a Pacific Island who is still convinced that World War II has not ended.

A banker disappers with a significant amount of money. Captain Midnight and Ikky trace the man to a small Pacific Island where he is recovering from exhaustion. The arrival of three greedy thugs on the island complicates Captain Midnight attempt to help the banker clear his name and return to his family.

Captain Midnight agrees to test a revolutionary rocket sled after the vehicle's first test pilot is killed in its 800 mph test run. Captain Midnight uncovers a sabotage plot to discredit the invention and its inventor.

Captain Midnight helps a group of Secret Squadron members who have been evicted from their club house by a commercial developer. In the process, Captain Midnight discovers a bank robbery.

Captain Midnight investigates the poisoning of a small dog belonging to a member of the Secret Squadron. The investigation leads to the solution of a bank robbery and the near death of Captain Midnight when he is imprisoned in a cold storage locker.

A frantic squadron member asks for Captain Midnight's help. He needs help in exorcising a dangerous ghost. Midnight, Ikky, and Tut set up an electronic perimeter around the Southern mansion that is ""haunted"" by a ghost and discover a foreign agent plotting to use it as a rendezvous site.

A fragment of a powerful radioactive element called Ormondium is stolen by foreign agents. Captain Midnight are caleld upon to recover the stolen materials.

Captain Midnight's friend Dereck Strange invites him to witness the test of a new guided missile: the Nike. When Strange does not show up for the test, Midnight and Ikky go to his apartment and learn he has been kidnapped. Enemy agents use drugs of Strange to get the secrets of the missle. After getting the information, the enemy agents put an unconscious Strange on a drone plane about to be destroyed in an Air Force Test. Only Midnight's intervention saves Strange's life and captures the enemy agents.

Captain Midnight and the Secret Squadron track down a dangerous group of diamond smugglers. The assignment is made easier with the help of one of Tut's inventions, an Omni Counter, which reacts to precious gems and metals.

Captain Midnight and Ikky go to Mexico to find an enemy radio station. The last intercepted message from the station referred to a shipment of fissionable materials that may prove a danger to the United States.

An astronomer dies after discovering a lost moon closely orbiting the Earth. Captain Midnight and enemy agents contend for the astronomer's secret with both sides aware that whichever power reaches the lost moon in space first will control the earth.

When counterfeit bills begin to flood into the United States, Captain Midnight discovers that a trucking company is being used as a means of distribution.

Captain Midnight and Ikky pay a visit to Tut who is busy in Africa collecting rare plant and soil samples. Hoping for a peaceful vacation, the Secre Squadron instead encounters the mystery of a stolen idol, a plot to foment native unrest, and a rich uranium deposit.

Captain Midnight goes to India to deliver a goodwill message at the invitation of Bengra Tassi. When Captain Midnight and Ikky get to India they discover Tassi has been kidnapped by ""The Executioner"". Captain Midnight must rescue Tassi before it is too late.

A famous scientist who is working on a new metal that may be the key to space travel is kidnapped. In the middle of a desert, Captain Midnight locates the scientist in a state of frozen animation. In order to save the scientist, Captain Midnight must survive a nuclear test at ground zero.

A young boy tells Captain Midnight about the strange and abusive behavior of his father, a gem expert preparing to cut a million dollar diamond. With the aid of Tut's new invention, a miniature television camera and transmitter, Captain Midnight learns that the boy's father has been kidnapped and a double has been put in his place. The plan is to steal the diamond when it is delivered for cutting. Captain Midnight arranges for the release of the boy's father and the apprehension of the criminals behind the proposed theft.

Captain Midnight and Ikky go undercover gehind prison bars to learn the secret of a series of prison riots. Another riot leads to Captain Midnight and Ikky escaping along with a band of prisoners. The Secret Squadron learns that the riots are part of a foreign plot against the United States.