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.
as DS Sarah Collins
as PC Lizzie Adama
as DC Steve Bradshaw
as DI Kieran Shaw
as DC Lee Coutts
as DS Elaine Lucas
as PC Arif Johar
as Matthew Brannon
as DCI Jim Fedden
as Claire Mills
as Cathy Teel
