
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 DC Alice Parker

as DCI Jim Fedden

as Sgt Fred Thompson

as Julie Woodson

as DC Archie Rivers

as DI Lucas Stanning

as Jermaine King

as Loretta Kennedy

as Mitko

as Becca

as Deirdre Keir