Emilia Fox Dr Nikki Alexander Actor David Caves Jack Hodgson Actor Richard Lintern Dr Thomas Chamberlain Actor Liz Carr Clarissa Mullery Actor Lauren Drummond Tamsin Nelson Actor Stephanie Siadatan Lorna Clarke Actor Nicole Gibson Evie Williams Actor Alexandra Afreya Female BT Operator Actor Kerry Fox Susie Merrick Actor Heather Peace DI Carey Murphy Actor Tina Harris Julie Brice Actor Kamari Romeo Alex Edwards Actor Andrew Knott Nick Marlow Actor Jemima Rooper Amy Marlow Actor Johann Myers DCI Martin Cramer Actor Emma Frankland Kelly Hayes Actor Raymond Waring Toby Logan Actor Paul Tylak David Stein Actor Olivia Chenery Beth Roscoe Actor David Mullen Male Police Emergency Operator Actor Sian Webber Maeve Williams Actor Andrew Neil Reece Williams Actor Graham Mitchell Writer Diarmuid Goggins Director Kiaran Murray-Smith Producer Richard Stokes Executive Producer