
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 Farah Mehenni

as PC Hadley Matthews

as DCI Tim Bailie

as Younes Mehenni

as PC Arif Johar

as DC Alice Parker