Guest Stars Carolina Valdés as Nadiuska De Sancha Finn Guegan as Bruno Gethin Anthony as Marcus O'Sullivan Loreece Harrison as Lauren Packham Andrew Knott as Corin Belling Naomi Yang as Jessica O'Sullivan Rebecca Banatvala as Dr. Rita Josif Joseph Potter as Tim Weatherley Nimmy March as Margaret Packham Shanay Neusum-James as Jasmine Alson Mia Suda Selway as Anya Chandanasiri Tazmyn-Mei Gebbett as Chloe O'Sullivan Caroline Gruber as Chief Constable Luna Blue Delandro-Abraham as Ava Packham Cavan Clarke as Forensic Scientist Anne Kavanagh as Nora Davis Joe Hughes as Seymour Darling Tony Wadham as Chris Haddock Kiran Landa as Sara Joshi Lisa Diveney as Hannah Belling
