E1 - Budapest

Aired: April 01, 1954

E2 - Antigua

Aired: Unknown

When Steve McQuinn arrives in Guatemala City he discovers the plot of a speculator who wants to keep coffee prices high.

E3 - Athens

Aired: April 06, 1956

E4 - Baja

Aired: May 03, 1956

E5 - Batavia

Aired: January 02, 1958

E9 - Casablanca

Aired: Unknown

E12 - Edinburgh

Aired: December 19, 1956

E13 - Geneva

Aired: Unknown

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

E14 - Havana

Aired: July 30, 1956

E15 - Helsinki

Aired: July 23, 1956

E18 - London

Aired: July 09, 1956

E23 - Monte Carlo

Aired: Unknown

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.

E24 - Naples

Aired: May 07, 1956

E26 - Paris

Aired: February 22, 1955

E27 - Prague

Aired: Unknown

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

E30 - Rome

Aired: Unknown

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

E32 - Sofia

Aired: March 07, 1956

E33 - Tangiers

Aired: Unknown

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

E34 - Teheran

Aired: July 20, 1955

E35 - Tel Avivi

Aired: September 11, 1958

E36 - Trieste

Aired: May 23, 1955

E37 - Ankara

Aired: February 16, 1956

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.

E38 - Vienna

Aired: August 19, 1956

E39 - ZAMBOANGA

Aired: June 10, 1956