Where to watch in Canada
Checked October 11, 2026
Available in 41 other countries 41 with streaming
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Availability history in Canada
Last checked
On 4 services when we started tracking Apple TV Store, Britbox Apple TV channel, BritBox, BritBox Amazon Channel
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Overview
A veteran beat cop and teenage girl fall to their deaths from a tower block in south-east London, leaving a five-year-old boy and rookie police officer Lizzie Griffiths on the roof, only for them to go missing. Detective Sergeant Sarah Collins is drafted in to investigate, working to find Lizzie before she comes to serious harm, but also to uncover the truth behind the grisly tower block deaths.
Cast
Gemma WhelanDI Sarah Collins
Tahirah SharifDC Lizzie Adama
Jimmy AkingbolaDC Steve Bradshaw
Emmett J. ScanlanDI Kieran Shaw
Bobby LockwoodDC Lee Coutts
Ella SmithDS Elaine Lucas
Karl DaviesDCS Tim Bailie
Michael KarimPC Arif Johar
Daniel AdegboyegaShakiel Oliver
Laurie DelaneyMary Shaw
Lamar WavesRyan Kennedy
Robbie GeeDS Mark Angel
Omar MalikUjal Jarral
Rawdat QuadriTia Kennedy
Seasons and episodes
3 seasons11 episodes
Gallowstree Lane
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Episode 1
DS Sarah Collins is called to the brutal stabbing of a teenager, but her investigation soon finds itself at cross purposes with a covert operation led by Kieran Shaw, who is working with Sarah's old partner Steve Bradshaw, now deep undercover. Meanwhile, Lizzie Adama is back at Farlow trying to balance her new role as a detective with family life, but her path and Kieran's are about to cross.
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Episode 2
Sarah and Elaine uncover a disturbing link between their ongoing investigation and a brutal hit-and-run. Kieran urges Lizzie not to reveal the secrets of Operation Perseus.
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Episode 3
Kieran and Baillie share some information that could help Sarah make an arrest but her reluctance to cooperate leaves them exasperated. Shakiel puts Steve's loyalty to the test.
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Episode 4
Operation Perseus reaches its climax as Kieran prepares to catch Shakiel with a car-load of automatic weapons. However, Spencer's killer, Jermaine King, has escaped from custody and kidnapped Ryan's sister, Tia.
If you like The Tower
+6 
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+3 
+7 
+4 
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