S2, EP22 "Parallel Lines Sometimes Meet"
Drake is sent to investigate when British husband and wife scientists disappear while vacationing on the English coast.
S2, EP21 "The Mirror's New"
When a British diplomat disappears shortly after shooting a man, Drake is tasked with finding out what happened to him.
S2, EP20 "Have a Glass of Wine"
Drake investigates a young lady who has been selling secrets; he follows her to France where she offers to help Drake find her mysterious employer.
S2, EP19 "It's Up to the Lady"
Drake is sent to retrieve Glover, who has defected to China; Drake follows Glover's wife to a remote Greek island near Albania where he encounters an Albanian agent trying to get Glover's wife over the border.
S2, EP18 "The Ubiquitous Mr. Lovegrove"
After an accident, Drake is surprised to find he has a gambling debt at a club he's never been to; the club's manager, however, knows all about Drake's career.
S2, EP17 "The Affair at Castelevara"
A former political leader returns to his home country to retire, but is arrested by the current president and faces the death sentence, something neither the British nor the American support, so Drake is sent to stop it.
S2, EP16 "A Room in the Basement"
Drake must break into the Romanian embassy in Geneva, in defiance of the British ambassador, to save a friend who possesses sensitive information while avoiding an international incident.
S2, EP15 "Whatever Happened to George Foster?"
Drake discovers that a woman is financing political agitators in Santo Marco trying to bring down the government; he sets out to find out who employs her and why.
S2, EP14 "Such Men Are Dangerous"
Drake takes the place of an ex-convict recruited as a terrorist and is sent to an elegant school for assassins; he uncovers an ultraradical organization that believes its mission is to eliminate undesirable world leaders.
S2, EP13 "That's Two of Us Sorry"
Confidential papers go missing, and Drake travels to a small island off the coast of Scotland to find them and the thief.
S2, EP12 "A Date With Doris"
When a glamorous actress is murdered, an M9 agent whose cover has been blown is framed for her murder, and Drake must get him out of jail.
S2, EP11 "Don't Nail Him Yet"
Assigned to track down an agent suspected of selling secrets to a foreign government, Drake goes under cover as a bumbling teacher on leave.
S2, EP10 "A Man to Be Trusted"
Two M9 agents have been tortured and murdered on a Caribbean island, and Drake's sent to find out who killed them and to determine how much information they divulged before dying.
S2, EP9 "No Marks for Servility"
M9 believes an international financier may be an extortionist and murderer, so Drake goes under cover as a butler at the financier's rented villa in Rome.
S2, EP8 "The Battle of the Cameras"
A woman in disguise steals some secret papers, which are then sold to the highest bidder, and Drake is asked to look into this and similar document thefts.
S2, EP7 "The Colonel's Daughter"
While in India, Drake's old friend asks him to investigate the mysterious death of the employee of a retired colonel.
S2, EP6 "Fish on the Hook"
M9 receives a mayday signal from an agent in a Middle Eastern country who has been compromised and needs help getting out safely.
S2, EP5 "Fair Exchange"
Drake tries to stop a former agent from killing the East German government official who had tortured her beyond repair.
S2, EP3 "Colony Three"
Drake hunts for missing British Communists.
S2, EP2 "Professionals"
When a M9 agent vanishes, Drake must go undercover in Prague to search for him; while there, he finds himself as the target of a Czech spy.
S2, EP1 "Yesterday's Enemies"
Drake investigates when it appears a former British agent is selling secrets.