• Cast in Order of Appearance: Nikki Amuka-Bird (Grace Morrigan), Agyness Deyn (DI Elaine Renko), Jojo Macari (Daniel Renko), Jim Sturgess (DCI Charlie Hicks), Mark Carlisle (Felix Nicholson), Clive Myrie (BBC News Reader), Lorraine Burroughs (Simone Hicks), Tamara Smart (Hailey Hicks), Tom Reed (Sunny Ramachandran), Owain Arthur (DS Keith Greener), Adrian Rawlins (DS George Mooney), Varada Sethu (DS Mishal Ali), Joplin Sibtain (DS Herbie Sarafian), Derek Riddell (DCS Roland Bell), Teri Ann Bobb-Baxter (Lily Ezekpo), Aisling Bea (Mari Butler), Simon Thorp (John Gregor)
• Written By: Neil Cross
• Directed By: Brian Kirk

• Cast in Order of Appearance: Jim Sturgess (DCI Charlie Hicks), Tigger Blaize (Technical Operative), Nikki Amuka-Bird (Grace Morrigan), Agyness Deyn (DI Elaine Renko), Ukweli Roach (Will Benedetti), Lorraine Burroughs (Simone Hicks), Kae Alexander (Angie Jones), Jojo Macari (Daniel Renko), Stephen Sackur (Hard Talk Presenter), Rebecca Deren (Psychiatric Nurse), Jamie Sives (Chris Chapel), Steve Pound (Dominic Vaughan), Heidi Monsen (Sabina Kesinovic), Derek Riddell (DCS Roland Bell), Aisling Bea (Mari Butler), Cameron King (Owen Butler), Owain Arthur (DS Keith Greener), Varada Sethu (DS Mishal Ali), Christine Bottomley (Maggie Sweeting), Liberty Gill (Jessica Sweeting), Tommy Finnegan (Adam Sweeting), Sarah Baxendale (Frankie Buckley), Pauline Whitaker (June Sweeting), David Seddon (Noel Buckley), Joplin Sibtain (DS Herbie Sarafian), Adrian Rawlins (DS George Mooney)
• Written By: Neil Cross
• Directed By: Brian Kirk

• Cast in Order of Appearance: Richard Coyle (Thom Blackwood), Kirsty Averton (Jamie Unwin), Agyness Deyn (DI Elaine Renko), Elie Haddad (Jean-Paul Corday), Jim Sturgess (DCI Charlie Hicks), Ukweli Roach (Will Benedetti), Lorraine Burroughs (Simone Hicks), Dermot Crowley (Father Dennis Chapman), Adrian Rawlins (DS George Mooney), Joplin Sibtain (DS Herbie Sarafian), Derek Riddell (DCS Roland Bell), Varada Sethu (DS Mishal Ali), Owain Arthur (DS Keith Greener), Jojo Macari (Daniel Renko), Nikki Amuka-Bird (Grace Morrigan), Gary Pillai (Sonographer), Tamara Smart (Hailey Hicks), Okorie Chukwu (Toby Olewaio), Ricci Harnett (Spencer Coleman), Stefano Braschi (Jason Walker)
• Written By: Neil Cross
• Directed By: Nick Rowland

• Cast in Order of Appearance: Agyness Deyn (DI Elaine Renko), Ukweli Roach (Will Benedetti), Varada Sethu (DS Mishal Ali), Stefano Braschi (Jason Walker), Owain Arthur (DS Keith Greener), Adrian Rawlins (DS George Mooney), Jim Sturgess (DCI Charlie Hicks), Aisling Bea (Mari Butler), Richard Coyle (Thom Blackwood), Geoff McGivern (Alan Beeny), Joplin Sibtain (DS Herbie Sarafian), Dermot Crowley (Father Dennis Chapman), Derek Riddell (DCS Roland Bell), Maggie Daniels (Hattie Burton), Jermaine Dominique (Emilio Martinez), Noah Maxwell Clarke (Jamal Devain), Tamara Smart (Hailey Hicks), Skye Laurie (Rebecca Leaver), Nikki Amuka-Bird (Grace Morrigan), Ania Marson (Miriam Blackwood), Clive Myrie (BBC News Reader), Cameron King (Owen Butler), Jojo Macari (Daniel Renko), Sam Alexander (Father Michael), Valentina Karol (Dia Jeganathan), Mateo Rufino (Andreas Rateau)
• Written By: Neil Cross
• Directed By: Nick Rowland

• Cast in Order of Appearance: Jojo Macari (Daniel Renko), Lorraine Burroughs (Simone Hicks), Jim Sturgess (DCI Charlie Hicks), Derek Riddell (DCS Roland Bell), Agyness Deyn (DI Elaine Renko), Joplin Sibtain (DS Herbie Sarafian), Varada Sethu (DS Mishal Ali), Owain Arthur (DS Keith Greener), Nikki Amuka-Bird (Grace Morrigan), Adrian Rawlins (DS George Mooney), Cameron King (Owen Butler), Aisling Bea (Mari Butler), Robin Weaver (Fran Rafferty), Rebecca Palmer (Martina Owen), Kae Alexander (Angie Jones), Daniel Coonan (DCI Alex Butler)
• Written By: Neil Cross
• Directed By: Richard Senior

• Cast in Order of Appearance: Jim Sturgess (DCI Charlie Hicks), Daniel Coonan (DCI Alex Butler), Agyness Deyn (DI Elaine Renko), Patrick Regis (Ben Morrigan), Derek Riddell (DCS Roland Bell), Carl Prekopp (Hughie Kinnear), Caroline Lawrie (Moira Gallagher), Anthony Carrigan (Mr. Weiss), Tamara Smart (Hailey Hicks), Lorraine Burroughs (Simone Hicks), Adrian Rawlins (DS George Mooney), Joplin Sibtain (DS Herbie Sarafian), Liani Samuel (Naomi Morrigan), Langa Somhedlwana (Claire Morrigan), Nikki Amuka-Bird (Grace Morrigan), Owain Arthur (DS Keith Greener), Varada Sethu (DS Mishal Ali), Jojo Macari (Daniel Renko), Aisling Bea (Mari Butler), Cameron King (Owen Butler), Kae Alexander (Angie Jones)
• Written By: Neil Cross
• Directed By: Richard Senior