Episode list

Cannon investigates a man who has been arrested for war crimes for serving as the commander of a prisoner of war camp.

Cannon investigates the death of a double-agent, who was slain to make it appear a foreign government is unstable and thereby set in motion a plot to "liberate" the country.

Cannon meets an old acquaintance who is touring Europe as a concert pianist. Her special piano, which accompanies her on the tour, triggers a murder and Cannon suspects the pianist's menacing manager is implicated.

Two American newspapers reporters discover the body of a murdered man on their train and investigate the killing.

When the German police refuse to take Helen Davis' evidence of a gang of blackmailing biological terrorists seriously, she decides to investigate a story on her own and tracks them to their headquarters in Hamburg, Germany.

While covering a dull conference in Brussels, Cannon discovers two murdered men and is mistaken as the contact point to fence black market diamonds.

Cannon tries to follow in the footsteps of a murdered reporter who died investigating a black-market ring.

Cannon and Davis investigate a gang of counterfeiters.

Cannon and Davis each receive a counterfeit ten dollar bill in an envelope. They discover that three million dollars were printed by the Germans during World War II but never recovered and are now stored near the Parisian flea market. The French police, however, do not believe their story.

The monotony of a long boat trip from Iceland to Sweden is broken when a twin brother is found murdered and the surviving twin disappears.

Cannon interviews a fellow reporter in jail behind the Iron Curtain. The reporter was convicted of espionage, but the scribe tells Cannon he pleaded guilty only to protect an innocent girl.

Cannon boards a plane to interview two men convicted of black marketing. When the plane's two pilots are murdered the reporter wishes he'd listened to Helen's premonition of danger.

Cannon covers the murder investigation of a prime minister's secretary, who was killed trying to prevent spies from stealing state secrets. His investigation shows that the opposition party is trying to destabilize the government and alienate Western powers.

Helen Davis investigates reports of war criminals hiding in Switzerland.

Cannon is held for ransom by two spies who have a message to spirit out of a foreign country.

Cannon discovers that an unfriendly power seeks to overthrow a neighboring government by causing hysteria among the people.

Cannon learns that a former newspaper reporter's life is in danger when the ex-newshound discovers racketeers have been stealing relief supplies earmarked for East Berlin.

When valuable documents are stolen, Cannon is accused of the crime and thrown in jail for espionage.

A convicted man asks Cannon to retrieve an envelope he claims has evidence that will prove his innocence.

When Cannon investigates corrupt business practices at a number of German steel mills, the ex-Nazi who owns them invites the reporter to his castle on the Rhine for a showdown.

While in a casino on the French Riviera, Cannon receives a tip to put 10,000 francs on "red five." The tip pays off, and Cannon gets a pocketful of money and the unwanted attention of a doctor and beautiful woman.

While in Hamburg to interview the head of the European Black Market, Cannon discovers a ring of passport forgers.

The French secret police ask Cannon to smoke out international spies who are using a magicians' convention as cover for a secret rendezvous.

Cannon investigates a mysterious explosion at a chemical plant and discovers that a supposedly abandoned railroad spur shows signs of recent use.

Cannon is summoned to the bedside of a dying man by two former circus performers. When he returns later in the day, he finds a different person occupying the bedroom.

A diplomat from behind the Iron Curtain requests Cannon's assistance to defect to Italy.

In order to prevent Cannon from covering, and perhaps swaying a local German election, the reporter is kept prisoner by a ex-Nazi candidate.

Cannon is determined to prove to dwellers in a remote village that the ghost that supposedly haunts their valley is nothing but superstitious nonsense.

When a German Colonel supposedly hung for war crimes five years earlier is spotted, Cannon's efforts to report on the story are thwarted by the authorities.

A foreign government wants Helen to produce a list of names for them and a not-so-friendly game of poker brings the problem to a head.

Cannon is entrusted with a secret formula. In order to keep it from falling into enemy hands, Cannon memorizes it and joins a night club act to escape his pursuers.

When a professor is murdered, Cannon hopes to identify the man by the radioactive material he also stole.

Cannon tries to interview a reclusive Polish scientist.

Cannon covers the attempts of a small European country to join with Western allies in a mutual aid pact. The vote results in murder.

Cannon becomes involved with a survivor of a Nazi concentration camp who plans to avenge himself on his former tormentors.

Helen Davis traces thieves who stole European art treasures and smuggled them to a Eastern dictator during the waning months of World War II.

Cannon and a fellow reporter are invited to travel behind the Iron Curtain. Once there, they are asked to investigate an important communist.

Cannon investigates a traitor hunted by the police and finds that there is more to the story than appears on the surface.