As of July 2026, The Professionals Season 4 aired in 1980 with 15 episodes. Full episode guide and where to watch below.
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The Professionals Season 4

1980 15 Episodes Action & Adventure · Crime ⭐ 8/10

Right now you can watch The Professionals Season 4 on streaming — and it earns its twists rather than manufacturing them. The 1-season run is exactly the right length for what it is doing. An 8/10 rating says what the writing already makes obvious: this one works. Watch Lewis Collins work — the performance is a masterclass in restraint. Start it whenever you need something guaranteed to land.

Whatever else is competing for your attention this week, The Professionals Season 4 is worth clearing space for. The plotting in The Professionals Season 4 is tight enough that the twists feel earned rather than assembled. 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. Lewis Collins and Martin Shaw lead a cast that brings real weight to the material. It was aired in 1980. The Professionals Season 4 is at its best in the quiet scenes between the plot beats, where the character work actually happens. It rarely drops the ball, and when it does, it recovers fast.

Viewers who think they have seen every crime drama tend to find The Professionals Season 4 proves them wrong. If you have run out of similar titles to watch, this is a strong next pick. It is a manageable watch, easy to fit into a single week. Lewis Collins's performance is the kind that shows up on best-of lists years later. If you have been looking for something to fill the gap left by a recently finished story, this is a reliable answer.

📡 Where to Watch The Professionals Season 4

Not currently available on major streaming platforms. Check back soon.

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🎬 The Professionals Season 4 — Episode Guide

E1
The Acorn Syndrome
1980-09-07
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.
E2
Wild Justice
1980-09-14
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?
E3
Fugitive
1980-09-21
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.
E4
Involvement
1980-09-28
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.
E5
Need To Know
1980-10-05
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?
E6
Take Away
1980-10-12
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.
E7
Black Out
1980-10-19
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.
E8
Blood Sports
1980-10-26
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.
E9
Slush Fund
1980-11-02
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.
E10
The Gun
1980-11-09
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 wh...
E11
Hijack
1980-11-30
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.
E12
Mixed Doubles
1980-12-07
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.
E13
Weekend in the Country
1980-12-14
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.
E14
Kickback
1980-12-20
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.
E15
It's Only a Beautiful Picture...
1980-12-27
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.

🎭 Cast of The Professionals Season 4

Lewis Collins
Lewis Collins
Bodie
Martin Shaw
Martin Shaw
Doyle
Gordon Jackson
Gordon Jackson
George Cowley

📋 All Seasons of The Professionals

Season 1Season 2Season 3Season 5

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