Guest Stars Kae Alexander as Linh Xuan Huy Jeany Spark as Sandrine Shaw Hayley Squires as Laurie Stone Rob Jarvis as DC Euan Johnson Nathaniel Martello-White as DS Nathan Bilk Vineeta Rishi as DC Rakhee Shah July Namir as Mona Asif Ahd Kamel as Fatima Asif Ben Miles as DSU Jack Haley Brian Vernel as Mikey Gowans Kim Medcalf as Suki Vincent Molly Simm as Elfie Mars Tom Turner as Gerald Glaspie Nick Mohammed as Fuzz Gupta Tony Way as Connor Saskia Reeves as Deborah Clifford Sam Otto as Abdullah Asif Alais Lawson as Genevieve Mark Umbers as Robert Walsh Raghad Chaar as Shelly Nicola Duffett as Alice Stone Tony McCullough as Gun Store Armourer