• Cast in Order of Appearance: Mark Addy (Coake), Phil McKee (Bremner), Iain Glen (Magnus), Emily Hampshire (Rose), Owen Teale (Hutton), Martin Compston (Fulmer), Rochenda Sandall (Cat), Molly Vevers (Heather), Nikhil Parmar (Harish), Abraham Popoola (Easter), Susan Rae (Newsreader), Alice Krige (Lennox), Stuart McQuarrie (Murchison), Benedict Andrew (Survey Team Leader), Ross Anderson (Cameron), Johannes Roaldsen Fürst (Askel)
• Written By: David Macpherson
• Directed By: John Strickland

• Cast in Order of Appearance: Abraham Popoola (Easter), Ross Anderson (Cameron), Benedict Andrew (Survey Team Leader), Nikhil Parmar (Harish), Mark Addy (Coake), Iain Glen (Magnus), Martin Compston (Fulmer), Emily Hampshire (Rose), Molly Vevers (Heather), Phil McKee (Bremner), Johannes Roaldsen Fürst (Askel), Rochenda Sandall (Cat), Owen Teale (Hutton), Alice Krige (Lennox), Stuart McQuarrie (Murchison), Meg Salter (Journalist), Hiftu Quasem (Emma MacKendrick), Sanjeev Kohli (Doctor Sail), Daniel Cawley (Paramedic)
• Written By: David Macpherson
• Directed By: John Strickland

• Cast in Order of Appearance: Emily Hampshire (Rose), Johannes Roaldsen Fürst (Askel), Benedict Andrew (Survey Team Leader), Nikhil Parmar (Harish), Martin Compston (Fulmer), Abraham Popoola (Easter), Ross Anderson (Cameron), Iain Glen (Magnus), Mark Addy (Coake), Phil McKee (Bremner), Owen Teale (Hutton), Rochenda Sandall (Cat), Alice Krige (Lennox), Stuart McQuarrie (Murchison), Jacob Fortune-Lloyd (Darian York), Saskia Ashdown (Danielle), Phoebe Strickland (Nurse Beth), Molly Vevers (Heather), Kerri McLean (Anna Dunlin)
• Written By: David Macpherson
• Directed By: John Strickland

• Cast in Order of Appearance: Mark Addy (Coake), Ross Anderson (Cameron), Phil McKee (Bremner), Nikhil Parmar (Harish), Emily Hampshire (Rose), Iain Glen (Magnus), Abraham Popoola (Easter), Martin Compston (Fulmer), Molly Vevers (Heather), Stuart McQuarrie (Murchison), Alice Krige (Lennox), Saskia Ashdown (Danielle), Jacob Fortune-Lloyd (Darian York), Johannes Roaldsen Fürst (Askel), Sanjeev Kohli (Doctor Sail), Daniel Cawley (Paramedic), Rochenda Sandall (Cat), Owen Teale (Hutton), Hiftu Quasem (Emma MacKendrick), Neshla Caplan (Kacey)
• Written By: Meg Salter
• Directed By: Alex Holmes

• Cast in Order of Appearance: Emily Hampshire (Rose), Phil McKee (Bremner), Nikhil Parmar (Harish), Ross Anderson (Cameron), Martin Compston (Fulmer), Abraham Popoola (Easter), Alice Krige (Lennox), Jacob Fortune-Lloyd (Darian York), Phoebe Strickland (Nurse Beth), Rochenda Sandall (Cat), Neshla Caplan (Kacey), Owen Teale (Hutton), Iain Glen (Magnus), Molly Vevers (Heather), Johannes Roaldsen Fürst (Askel), Stuart McQuarrie (Murchison), Sanjeev Kohli (Doctor Sail)
• Written By: David Macpherson
• Directed By: Alex Holmes

• Cast in Order of Appearance: Emily Hampshire (Rose), Iain Glen (Magnus), Martin Compston (Fulmer), Nikhil Parmar (Harish), Ross Anderson (Cameron), Jacob Fortune-Lloyd (Darian York), Phil McKee (Bremner), Stuart McQuarrie (Murchison), Hiftu Quasem (Emma MacKendrick), Rochenda Sandall (Cat), Alice Krige (Lennox), Saskia Ashdown (Danielle), Johannes Roaldsen Fürst (Askel), Owen Teale (Hutton), Neshla Caplan (Kacey), Molly Vevers (Heather), Abraham Popoola (Easter)
• Written By: David Macpherson
• Directed By: Alex Holmes