Craven and Haggerty are working against the clock to find a gunman stalking the London streets.

Craven has to investigate a morally dubious but strategically important foreign VIP who has been robbed of a fortune in diamonds.

Craven and Haggerty are assigned to investigate if a photographer is a threat to national security.

When a member of a foreign embassy is caught shoplifting in London, but tries to hide her status by willingly accepting arrest, Superintendent Inman takes an interest in her employers.

Tensions run high as Craven and Haggerty investigate two army officers.

The team is assigned to protect a visiting foreign diplomat.

Is Strand's erratic behaviour a result of the pressure he is under or is he playing a much more dangerous game?

A German student revolutionary has been allowed into Britain under the strict condition that he does nothing political. Craven and Haggerty are made to ensure that he sticks to the terms of his deal.

Craven must unravel the connection between a recently-killed spy and an au pair.

Craven is appalled to find himself implicated in his ex-wife's terrorist activities.

Craven provides security for the debriefing of a captured KGB agent.

An experimental weapon is stolen from a military research facility, but the thieves are unaware the weapon is unstable.

Craven and Haggerty are hot on the trail of a traitor has broken out from prison.

The team are on the trail of Rehfuss - a deadly assassin who has managed to get into the country.

Craven and Haggerty are under the gun to find a kidnapped diplomat's daughter before she is killed.

Is an eminent scientist, on lone to a top-secret research establishment, a security risk? That's the question facing Inman and his team. The research establishment is suddenly prone to 'leaks'. Has the man been got at?

Jordan and Inman go in search of a missing Russian ballerina.

The officers of the Special Branch mount a dawn raid on the homes of the members of a suspected spy ring.

Inman meets the CIA's new man in London. Jordan meets an old friend from Moscow. All perfectly legal - until the two are seen together at intervals and the Special Branch team become involved in international politics.

While a member of the SB team keeps watch on Karl Peter's flat, Inman and his team scan though his charge sheet. They believe he will attempt to incite London dockworkers into taking industrial action against their employers.

When military security intercepts letter written to a lonely serviceman by his foreign 'penpal' Rita, which contain casual references to secret information, Supt Inman sends DS Jordan to investigate.

When a Czech au-pair goes missing in London and her father is one of the most powerful men the country, Inman and Jordan must find out what's happened to her. But their enquirers lead to a dead end.

When Inman discovers that "The Guardians" are taking a more-than-usual interest in a group of pro-germ-warfare people and finds that their leader is a pretty girl, he decides to send Jordan along to question her.

Craven finds the tables turned when he is accused of hounding a self-confessed fraud.

Cowley suicides shortly after an unproductive round of questioning by Eden in gaol, which leads to an embarrassing public coroner's inquest. Jordon investigates a scientist being vetted for a sensitive position and all agree he's too far left for further consideration, yet he still succeeds.

A small boat arrives at a beach in Kent where illegal aliens are unloaded, but the police bag the smugglers and all bar one of the Pakistanis, now quite ill, who seeks refuge with an immigrant rights activist.

A teenager's vow of vengeance leads to Inspector Jordan interrupting a wedding and Superintendent Eden accepting a parcel that contains death. Before the day is over both men have cause for concern.

Informed that the manuscript of a Russian author's novel which has been smuggled into Britain is a forgery and could discredit the Goverment, Inspector Jordan goes against orders and investigates the claim.

The son of a trusted officer of the special branch has become radicalised while away at university, trying to join a gang of riot-minded militant socialist students. This threatens to break up his family, and his father's position.

A girl lands at Heathrow from Rhodesia, but owing to Britian's break of diplomatic relations, she has no valid passport. A young officer is supposed to mind her until she can be sent back, but takes her for a tour instead.