Drake is sent to Singapore is to infiltrate the local Chinese spy ring. He impersonates a man who was going to defect to the East and his task is to find out as much about the foreign agency as possible, including the local spies.
An M9 agent infiltrating a group of mercenaries is killed, supposedly in an ambush. Drake is sent to Africa to join Colonel Coote's mercenaries and to find out what happened. He finds a plot to overthrow the government. a government.
Returning home, Drake finds himself diverted to Bir Azhad to pick up a doctor. However, he is very nervous as somebody tried to kill him with a book bomb. Drake realises that there is something in the doctor's past he wants to keep hidden.
A WREN is murdered and Drake is sent to investigate. Her body is found with some top secret signals and he is to find out how and why she has the secrets. The only clue; a radio operator who disappeared just after she was killed.
Drake is sent to Bagdad as there appears to be a leak coming from one of his best friends. He sets a trap for his friend, which is sprung. When his friend vehemently denies his involvement, Drake must go looking for somebody else.
An agent that is sometimes used by M9 has disappeared and Drake is sent to Switzerland to find out what has happened. He finds that he is supposed to have died 3 months, ago but someone has withdrawn money out of his account recently.
An M9 agent has been captured in Sofia and is being tortured to make him identify local agents, which threatens M9's operations in the area. Drake frees him but, still being affected by the torture, he mistakenly kills another agent.
An M9 agent is murdered in the Caribbean while investigating illegal arms deals. The deals are supposed to be the precursor to an armed overthrow of the government. Drake is sent to take his place and investigate the dealings.
Two children end up in hospital after they stumble into a government germ warfare research unit. This troubles the chief scientist's conscience and he flees to France. Drake is sent to bring him back to England.
After his cover is blown in an operation, Drake heads for "sunny Spain" to hide out for a while. With an apparent enemy arriving and Drake's friend telling the hotelier he intends to shoot Drake, it becomes a puzzle as to who can be trusted and who is really up to what. One of the lighter-hearted episodes yet still intriguing.
A British diplomat in Rome leaves some secret papers in a briefcase in his car. While he is having a drink, a man steals the briefcase. The diplomat calls in Drake, who goes on a chase and finds that the briefcase has been on-sold.
The Jolly Roger is pirate radio station on an old sea fort. A DJ is killed just as he sends a message saying that the station is sending coded messages to foreign submarines. Drake goes undercover as a DJ to find out what is happening.