The Professionals - Season 4

First aired: 9/7/1980 15 episodes

In series four, the CI5 protect the daughter of a visiting South American president after his son is assassinated, and the team uncover a silver bullion smuggling operation being controlled from behind the Iron Curtain.

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Episodes

1. The Acorn Syndrome

Aired: 9/7/1980

The daughter of a British Government engineer who is working on a defence protect is kidnapped, and the only way she will be safely returned is if he agrees to betray secrets to enemy agents.

2. Wild Justice

Aired: 9/14/1980

Bodie's mental state is called ino question when he becomes obsessed with a local Hell's Angel motorcycle gang, gradually sending him further and further behind in training. Is he cracking up?

3. Fugitive

Aired: 9/21/1980

A CIA agent is murdered in London, prompting CI5 into launching a fake arms deal with the terrorists who were responsible for the killing. But the gang uncover the plot in time, taking Bodie hostage and using him as their meal ticket to escape the country.

4. Involvement

Aired: 9/28/1980

In the midst of a shoot-out during a drugs smuggling investigation, Doyle meets and falls for Ann Holly, only to discover that CI5 suspect her of being closely linked to the scam herself.

5. Need To Know

Aired: 10/5/1980

Cowley finds himself under suspicion when a former colleague of his is arrested for being a double agent. So just how deeply involved is the CI5 Chief?

6. Take Away

Aired: 10/12/1980

A team of Hong Kong police join CI5 in London to help crack a local heroin supply and protection racket. It's down to Bodie and Doyle to expose a scheme to smuggle drugs to the US by teams of Triads and European agents.

7. Black Out

Aired: 10/19/1980

CI5 discover that a possible terrorist attack is being planned, and the only clue they have in solving it is a German girl who is found collapsed in a church and suffering from amnesia.

8. Blood Sports

Aired: 10/26/1980

CI5 move in to protect the daughter of a South American President after his son - and her brother - is assassinated on the field of a polo match.

9. Slush Fund

Aired: 11/2/1980

A hitman is employed by a group of East German officials to assassinate a reporter who is planning to publish a report in which their new fighter plane is branded as a potential death-trap.

10. The Gun

Aired: 11/9/1980

A drug addict is murdered by a pusher who then hastily discards the gun, only for it to be found by a young boy-who then accidently shoots his friend in the process. The pusher then goes in search of the boy in an attempt to retrieve the gun and at the same time has to try to avoid his own people who are in pursuit of him.

11. Hijack

Aired: 11/30/1980

Silver bullion is being shipped into Britain via the Iron Curtain, only for it to be hijacked by one of the group's own officials.

12. Mixed Doubles

Aired: 12/7/1980

Bodie and Doyle are undergoing intense training in preparation for an assignment where they are protecting a foreign official...at the same time, two potential killers are receiving similiar training to prepare them for the assassination of the same official.

13. Weekend in the Country

Aired: 12/14/1980

Bodie, Doyle and their latest girlfriends are on a quiet weekend in the country when they unwittingly get caught up at a farmhouse siege in which they must try and escape from a group of gun-toting fugitives.

14. Kickback

Aired: 12/20/1980

Bodie and Keller, an old acquaintance from his days in the SAS, go undercover in order to trap a would-be assassin by posing as hitmen offering to do the job themselves - in order to fake the killing. But Keller turns out to have an ulterior motive.

15. It's Only a Beautiful Picture...

Aired: 12/27/1980

Various industrial secrets and highly-valuable arts treasures are being stolen and sold on by a gang who are using the blind routine of Customs to their full advantage. CI5 devise a trap to stop the thieves in their tracks.