Guest Stars Duncan Pow as Dr. James Haslam Stephanie Gil as Ellie Bailey Emma Stansfield as Emma Black Judah Cousin as Toby Daszkiewicz Sophia Ally as Gracie Sturgess Kierra Thompson as Annie Bailey Faye McKeever as Jayne McNaughten Jill Winternitz as Yulia Skripal Naomi Yang as Maya Paul Popplewell as DI Ben Mant Wayne Swann as Sergei Skripal Matt McCooey as Mark O'Brien Ann Akin as Davina Moens Kate Lamb as PC Alex Wade Daniel Crossley as Police Officer Natalie Klamar as Sergeant Tracy Holloway Uncredited Amber Aga as DI Lata Mishra