
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 Mary Shaw

as Aliya Mehenni

as Carrie Stoddard

as Ben Stoddard

as Joe Macaulay

as Sgt Fred Thompson

as Pathologist

as Police Officer WPC

as Harry Bowman

as PC Jenny Dunne

as DC Jez Vine