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.
DS Sarah Collins and her colleague, DC Steve Bradshaw, officers in the Directorate of Special Investigations (DSI), are called to an incident at Portland Tower in south east London. They find at the bottom of the tower the dead bodies of long-serving police officer, PC Hadley Matthews, and a 15-year-old Libyan refugee, Farah Mehenni.
With Lizzie still on the run, Sarah finally persuades her boss, DCI Tim Bailie, to go public about Lizzie's disappearance. Later, she makes a series of discoveries about the events that led up to the Portland Tower fall which further complicate the case.
Lizzie decides to turn herself in, but first she meets Kieran Shaw in secret, who tries to persuade her not to implicate herself. When Sarah finally interviews Lizzie, the explosive truth about what really happened on top of the tower emerges
Gemma Whelan
DI Sarah Collins
Tahirah Sharif
DC Lizzie Adama
Jimmy Akingbola
DC Steve Bradshaw
Emmett J. Scanlan
DI Kieran Shaw
Bobby Lockwood
DC Lee Coutts
Ella Smith
DS Elaine Lucas
Karl Davies
DCS Tim Bailie
Michael Karim
PC Arif Johar
Daniel Adegboyega
Shakiel Oliver
Laurie Delaney
Mary Shaw
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