Episode guide

S4·E1 The Acorn Syndrome

Core Aired September 7, 1980

Synopsis

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.

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Frequently Asked Questions

When did Season 4 Episode 1 of The Professionals air?

Season 4, Episode 1 ('The Acorn Syndrome') originally aired on September 7, 1980.

How long is Season 4 Episode 1 ('The Acorn Syndrome')?

The episode follows the standard broadcast runtime for The Professionals.

What happens in The Professionals Season 4 Episode 1?

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....

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