Detective Mitchell investigates an international spy ring operating amidst the holiday lecture circuit.

SKY ANGEL SPECIAL. "Manger Story" Detective Mitchell investigates an international spy ring operating amidst the lecture circuit.

Steve must expose the truth about a set-up involving the leader of an Eastern European country who was falsely accused of spying for the United States.

Steve is sent to South America concerning the reality of a letter.

Steve travels to Berlin to recover confidential papers stolen from a diplomatic courier.

Counterfeiters flood the Orient with bogus U.S. currency.

Mitchell protects a French girl who witnessed an assassination in Paris.

Steve travels to South America to resolve the murder of the head of one of the sparring parties which accuses an American citizen.

Steve travels to Burma to find out who killed a newspaper correspondent posing as a political refugee and why.

Steve must uncover who is trying to sabotage a meeting in Paris between representatives from the United States and three Eastern European countries.

Steve travels to Africa to locate two missing agents who were sent there to find the secret breeding grounds of a powerful germ culture.

Steve travels to Portugal to help a friend and colleague investigate a political refugee scam that smuggles aliens into the United States.

Steve investigates an organization of professors who lecture and find the one who is running secrets from the United States to Europe.

Steve travels to the Middle East to prove that the United States has nothing to do with the assassination of the king.

Steve travels to Panama to find who has been stealing large quantities of dynamite.

Steve investigates the disappearance of documents.

Steve travels to Barcelona to retrieve records of top-secret conversations from a European diplomat who has disappeared.

Steve travels to Singapore to find rubber worth $1 million stolen from the United States.

Steve travels to the Balkans and poses as a journalist so he can secretly meet with a delegate from one of the Balkan countries.

Steve's mission is to find out who is smuggling guns and other contraband into China.

Steve travels to Venice to find and buy back a rotor to the agency's code machines, containing confidential information.

Steve goes to Richmond to find out why a foreign agent has stolen an old Civil War map from the home of Col. Caruthers.

Steve travels to Cairo to dispel the order of the sacred dove, the most dangerous secret society ever encountered.

Undercover agent Steve Mitchell (Brian Donlevy) deals in intrigue.

Steve travels to Greece to find out how a man could have recently been murdered when he was believed to have died six years prior.