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.
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
Lamar Waves
Ryan Kennedy
Robbie Gee
DS Mark Angel
