One of their own has joined the adverse party, so Scott & Robinson are sent to Hong Kong after him.

A businessman in Hong Kong owes the IRS; Robinson & Scott carry the loot.

A French spy hampers the search for missing files.

A murder happens in front of them, and Robinson & Scott must investigate a mysterious organization.

A nightclub singer is a pawn between drug smugglers (who have kidnapped Scott) and the pair.

A bodyguard assignment for a very unpleasant sort of fellow.

An agent is killed, the microfilm is missing, his girlfriend is threatened.

A prisoner exchange requires a search for a double agent.

Vietnam has not seen three agents assigned there, and Scott suspects Robinson's girlfriend.

A Tokyo seminar on obesity is threatened with a new form of Chinese plague.

Missing microfilm must be paid for or Scott will be killed, but where to get the shekels?

An anti-American group in Japan menaces the last of the aristocracy.

An American schoolteacher, an ancient walled city, a missing train and a valuable cargo lost in China.

A definitive mission to Vietnam in order to rescue the daughter of a physician.

Russian defector for American girl: good business or not?

A womanizing American hampers efforts to protect a Japanese economic conference from Communist sabotage.

A Zulu (Oxon.) who trades diamonds for revenge, a gangster dominating a small village, and radioactive isotopes.

Who is kidnapping the great agronomists in Mexico City?

They bet each other a dollar that one can evade the other for a week, but he's been contaminated with anthrax and must be found in 24 hours.

An exiled South American dictator has plans, or has he, really?

A redoubtable Embassy figure in Mexico deals them a turn.

Quetzalcoatl has appeared in the Mexican jungle, or is it an AWOL cosmonaut pursued by his old comrades?

Infiltrate a revolutionary South American group, with Hollywood connections, that's the assignment.

An agent abroad and pregnant with information must report to the boys back home after her affair with the adverse party.

Bodyguard work for a VIP's daughter. She buys an objet d'art, and hell ensues.

Robinson is brainwashed to kill Scott, whose orders are to kill Robinson.

Gold fever among old friends in the jungles of Mexico.