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Checked October 11, 2026
Available in 1 other country 1 with streaming
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Availability history in United States
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On 3 services when we started tracking The Roku Channel, Shout! Factory TV, Shout! Factory Amazon Channel
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Overview
The Knock is a British television drama series, created by Anita Bronson and broadcast on ITV from 1994 to 2000, which portrayed the activities of customs officers from Her Majesty's Customs and Excise. The series derived its name from the distinctive 'knock knock knock' command used over the radio to synchronise a raid.
Cast
Caroline Lee-JohnsonDiane Ralston
Steve ToussaintBarry Christie
Daniel BrownAlex Murray
Peter O'BrienGlen VaughanSeasons and episodes
5 seasons38 episodes
Series 5
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E1 Armed and Dangerous
An illegal arms racket is discovered after a suspicious container at Tilbury Docks explodes, almost killing Christie. A new elite squad known as Indigo has been formed and Christie is invited to join, leaving Murray frustrated at being passed over.
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E2 The Mole
Siblings Rick and Jenny Foster supply deadly ecstasy tablets in the clubs of Ibiza. The pair are so hard to catch that Indigo suspect there's a mole tipping them off.
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E3 Poison
A poisonous toad smuggling operation causes a series of deaths to Indigo. An international drugs baron has an old score to settle with team leader Vaughan.
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E4 Power Trip
When a teenage girl goes missing, an online pedophile ring are the chief suspects. An explosion kills the main suspect. The team race to find the girl before she is killed.
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Episode 5
If you like The Knock
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+8 
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