Gemma Whelan

as DS Sarah Collins

Tahirah Sharif

as PC Lizzie Adama

Jimmy Akingbola

as DC Steve Bradshaw

Emmett J. Scanlan

as DI Kieran Shaw

Michael Karim

as PC Arif Johar

Laurie Delaney

as Mary Shaw

Karl Davies

as DCI Tim Bailie

Bobby Lockwood

as DC Lee Coutts

Ella Smith

as DC Elaine Lucas

Stuart McQuarrie

as DCI Jim Fedden