Guest Stars Adjoa Andoh as Pathologist Lilly Adelayo Adedayo as Kayla Nicholas Blane as Pathologist Oswald Spear Colin Salmon as Doug Greer Michael Culkin as Justice Lockwood Jing Lusi as Gabby Tony Gardner as Commander Douglas Stone Fady Elsayed as Jamal Pippa Bennett-Warner as Zana Washington Mark Bagnall as Thomas King Leo Gregory as Warren Lennox Raffaello Degruttola as Niccolo Cliff Barry as Albert Carlow Joss Porter as Rodin Natasha Sparkes as Carla Kasey McKellar as Bobbi Washington Liam Sargeant as Jack Carlow Nisha Nayar as Namita Cresswell Shereen Gray as Shonda Washington Michael Byers as Robert Page Uncredited Robert Glenister voices Opening Narration