Episode 1 - Budapest

Episode 2 - Antigua

Episode 3 - Athens

Episode 4 - Baja

Episode 5 - Batavia

Episode 9 - Casablanca

Episode 12 - Edinburgh

Episode 13 - Geneva

While on assignment in Geneva, McQuinn uncovers an assassination scheme involving the Russians.

Episode 14 - Havana

Episode 15 - Helsinki

Episode 18 - London

Episode 23 - Monte Carlo

While on assignment in Monte Carlo, Steve finds an American intelligence agent who has been severely beaten and robbed. Steve agrees to undertake the agent's assignment - retrieving a roll of film with incriminating photographs of a corrupt politician.

Episode 24 - Naples

Episode 26 - Paris

Episode 27 - Prague

While in Prague, McQuinn helps a Russian ice-skating star who wishes to defect to the West.

Episode 30 - Rome

While in Rome investigating the leaking of classified documents from the American Embassy, McQuinn stumbles upon a German counterfeiting plot.

Episode 32 - Sofia

Episode 33 - Tangiers

Steve tries to help a Bulgarian schoolmaster, hunted by his country's secret police in Tangier, obtain a visa to the United States.

Episode 34 - Teheran

Episode 35 - Tel Avivi

Episode 36 - Trieste

Episode 37 - Ankara

On an airplane Steve meets two children traveling alone who refuse to give their last name. When their aunt fails to meet them at the airport, Steve takes pity on them and allows them to stay in his hotel room. The children's aunt finally arrives, but Steve learns too late that a Romanian industrialist has fled to Crete with a large sum of money and the "aunt" is actually a communist agent who plans to use the children as hostages to force the defector to return behind the Iron Curtain.

Episode 38 - Vienna

Episode 39 - ZAMBOANGA