Episode 1: The Dog-Gone Affair
Original Airdate: September 13, 1966

On an island near Greece, UNCLE Agent, Mark Slate watches as a Thrush agent tests a new drug by spraying it on some partying villagers. The drug slows them to half speed. If the drug is unleashed on the world, ecomonic chaos would ensue. The only known antidote is on its way to the Island via commercial flight ... on the fleas of a dachsund accompanied by UNCLE Agent, April Dancer.

Episode 2: The Prisoner of Zalamar Affair
Original Airdate: September 20, 1966

Zalamar is a tiny but very important Arabian State. Mark is there to protect it's ruler, Ali Hassen, after rumors of trouble. Unfortunately, Mark is unsuccessful. Ali Hassen succumbs to poisoned popcorn and his daughter, Fatima, who is next in line to rule, is kidnapped. April, a dead ringer for Fatima, is sent to Zalamar to impersonate Fatima until she can be found and released from her captors.

Episode 3: The Mother Muffin Affair
Original Airdate: September 27, 1966

UNCLE Agent Napoleon Solo is in London with April where they are to pick up instructions in the form of a half-penny in a beggar's cap. Unfortunately, Solo was followed from the airport by Mother Muffin, an elderly lady who leads a group of assassins bent on retrieving the half-penny first.

Episode 4: The Mata Hari Affair
Original Airdate: October 4, 1966

Someone is after bellydancer Mata Hurens, who has a message for Mr. Waverly. She boards a train for London as does April who is trying to see to her safe arrival. However, a bomb has been planted on the tracks. The train derails and many are killed, including Mata Hurens. April survives and is determined to find the murderer. By impersonating the dead bellydancer, April hopes the killer, thinking he's failed will make another attempt. Then, April and Mark can capture him.
Episode 5: The Montori Device Affair
Original Airdate: October 11, 1966

UNCLE headquarters in Rome is raided by Thrush agents who swipe a small, jewel-like device called a Montori. The Montori allows UNCLE agents to listen in on any UNCLE channels, even scrambled ones. Waverly orders all communications at UNCLE to cease until the device is recovered. With six world leaders coming together for a top-secret conference, Waverly believes Thrush intends to create chaos at the meeting. Without communications, Waverly is unable to warn the world leaders of the probable danger. April and Mark must find the device.

Episode 6: The Horns-of-the-Dilemma Affair
Original Airdate: October 18, 1966

Mexican millionaire and bullfight aficionado, DeSada, is head of Thrush:Central America. In an effort to gain control of Project Gamma, a rocket transport capable of 5,000 mph, he has kidnapped the three men who have created it. Meanwhile, his own scientist has develped a machine capable draining a brain of all its knowledge and transfering to a computer tape. April has made contact through one of DeSada's helpers, a famous matador. Mark takes on the persona of a bullfight critic to aid April in freeing the three kidnap victims.

Episode 7: The Danish Blue Affair
Original Airdate: October 25, 1966

Mark and April are sent to Denmark to rescue Stanley Umlaut who has been kidnapped by Thrush. Stanley, unknowingly, has eaten a piece of Danish blue cheese that contains a microdot hidden by Thrush agents.

Episode 8: The Garden of Evil Affair
Original Airdate: November 1, 1966

A doctor developes a serum that is able to transfer the mind of a dead person into the brain of one of his descendants. The doctor is murdered by members of a cult who kill by scratching their victims. The Cambodyses cult are fed small amounts of poison on a daily basis until they are immune to its affects. However, it renders their finger nails deadly weapons. The cult, Thrush, and UNCLE want the serum and the doctor's granddaughter."

Episode 9: The Atlantis Affair
Original Airdate: November 15, 1966

April and Mark are looking for Professor Antrum who has been searching for Atlantis. Rumors indicate that crystals able to concentrate the power of the sun into a beam more powerful than a laser are hidden at the entrance to Atlantis. According to a cryptogram that entrance is on the property of an eccentric name LeGallows. Antrum is kidnapped by Thrush and recovered by UNCLE only to be re-kidnapped along with April and Mark.