On a train headed for England a group of travelers is delayed by an avalanche. Holed up in a hotel in a fictional European country, young Iris befriends elderly Miss Froy. When the train resumes, Iris suffers a bout of unconsciousness and wakes to find the old woman has disappeared. The other passengers ominously deny Miss Froy ever existed, so Iris begins to investigate with another traveler and, as the pair sleuth, romantic sparks fly.

An American doctor and his wife, a former singing star, witness a murder while vacationing in Morocco, and are drawn into a twisting plot of international intrigue when their young son is kidnapped.

A hapless orchestra player becomes an unwitting pawn of rival factions within the French secret service after he is chosen as a decoy by being identified as a super secret agent.

A mystery writer is intrigued by the tale of notorious criminal Dimitrios Makropolous, whose dead body was found washed up on the shore in Istanbul. He decides to follow the career of Dimitrios around Europe, in order to learn more about the man. Along the way he is joined by the mysterious Mr. Peters, who has his own motivation.

Chan, in Paris for a reunion with friends from World War I, becomes involved in investigating the murder of a munitions manufacturer who was supplying arms to the enemy, even as the rising clouds of World War II force the city into nightly blackout status..

The wife of an American doctor suddenly vanishes in Paris. To find her, he navigates a puzzling web of language, locale, laissez-faire cops, triplicate-form filling bureaucrats and a defiant, mysterious waif who knows more than she tells.

While investigating the death of a friend and fellow cop, Los Angeles police officer Barney Caine stumbles across evidence that Nazis created a synthetic alternative to gasoline during World War II. This revelation has the potential to end the established global oil industry, making the formula a very valuable and dangerous piece of information. Eventually, Caine must contend with oil tycoon Adam Steiffel, who clearly has his own agenda regarding the formula.

In order to help bring Nazis to justice, U.S. government agent T.R. Devlin recruits Alicia Huberman, the American daughter of a convicted German war criminal, as a spy. As they begin to fall for one another, Alicia is instructed to win the affections of Alexander Sebastian, a Nazi hiding out in Brazil. When Sebastian becomes serious about his relationship with Alicia, the stakes get higher, and Devlin must watch her slip further undercover.

Ejen Ali is appointed as the pilot of Project Satria, a new armoured suit with the help of an Artificial Intelligence programme specially designed to optimise the physical performance and mental skills of MATA agents while carrying out their secret missions.

Bourne is brought out of hiding once again by reporter Simon Ross who is trying to unveil Operation Blackbriar, an upgrade to Project Treadstone, in a series of newspaper columns. Information from the reporter stirs a new set of memories, and Bourne must finally uncover his dark past while dodging The Company's best efforts to eradicate him.

After Regina Lampert falls for the dashing Peter Joshua on a skiing holiday in the French Alps, she discovers upon her return to Paris that her husband has been murdered. Soon, she and Peter are giving chase to three of her late husband's World War II cronies, Tex, Scobie and Gideon, who are after a quarter of a million dollars the quartet stole while behind enemy lines.

Droste, a mild-mannered businessman, was an intelligence expert during World War II. When Droste runs into his old friend Baron Von Straub, the two rekindle a friendship that was interrupted by the war. However, when Von Straub asks Droste to deliver a small package to a friend in West Germany, the befuddled Droste is set up for a series of complicated spy games.