- Ep: 1
- Episode 1
- Cast in Order of Appearance: Natalie Dormer (Sarah), Ian Hanmore (Polus), Iain De Caestecker (Paul), Daniel Kaluuya (Mac), Johnny Harris (Neil), Jenn Murray (Natalie), Eleanor Matsuura (Vicky), Tom Ellis (Mark), Claire Rushbrook (Meg), Lily Loveless (Anna), Daniela Nardini (Helen), Sophie Wu (Jay), Karla Crome (Girl 1), Chris Mason (Steve), Sophia La Porta (Tracy), Mat Fraser (Richard), Francis Magee (Dr. Tremlett), Theo Barklem-Biggs (DC Firth), Robbie Gee (DCI Armstrong)
- Written By: Jack Thorne
- Directed By: Farren Blackburn
- Ep: 2
- Episode 2
- Cast in Order of Appearance: Daniel Kaluuya (Mac), Iain De Caestecker (Paul), Daniela Nardini (Helen), Johnny Harris (Neil), Natalie Dormer (Sarah), Sophie Wu (Jay), Lily Loveless (Anna), Claire Rushbrook (Meg), Zach Morris (Sam), Brandon Robinson (Fred), Tom Ellis (Mark), Philip Bird (Mr. Peterson), Jenn Murray (Natalie), James Greene (Eric), Chris Mason (Steve), Sophia La Porta (Tracy), Eleanor Matsuura (Vicky), Ian Hanmore (Polus), Robbie Gee (DCI Armstrong), Lloyd Hutchinson (Superintendent Clement), Theo Barklem-Biggs (DC Firth), Francis Magee (Dr. Tremlett)
- Written By: Jack Thorne
- Directed By: Farren Blackburn
- Ep: 3
- Episode 3
- Cast in Order of Appearance: Daniel Kaluuya (Mac), Iain De Caestecker (Paul), Sophie Wu (Jay), Johnny Harris (Neil), Daniela Nardini (Helen), Francis Magee (Dr. Tremlett), Jenn Murray (Natalie), Ian Hanmore (Polus), Robbie Gee (DCI Armstrong), Tom Ellis (Mark), Natalie Dormer (Sarah), Lily Loveless (Anna), Chris Mason (Steve), Chris Mason (Steve), Claire Rushbrook (Meg), Joe Dempsie (John), Ruth Gemmell (Alice), Craig Conway (Phil), Genevieve Barr (Maddy), Karl Collins (Higgy), Lloyd Hutchinson (Superintendent Clement), Theo Barklem-Biggs (DC Firth)
- Written By: Jack Thorne
- Directed By: Farren Blackburn
- Ep: 4
- Episode 4
- Cast in Order of Appearance: Daniel Kaluuya (Mac), Iain De Caestecker (Paul), Sophie Wu (Jay), Lily Loveless (Anna), Claire Rushbrook (Meg), Joe Dempsie (John), Ciaran O'Quigley (Farmer), Nicholas Khan (Dr. Jamison), Ruth Gemmell (Alice), Genevieve Barr (Maddy), Karl Collins (Higgy), Craig Conway (Phil), Johnny Harris (Neil), Jenn Murray (Natalie), Theo Barklem-Biggs (DC Firth), Robbie Gee (DCI Armstrong), Tom Ellis (Mark), Natalie Dormer (Sarah), Chris Mason (Steve), Ian Hanmore (Polus)
- Written By: Jack Thorne
- Directed By: Tom Shankland
- Ep: 5
- Episode 5
- Cast in Order of Appearance: Daniel Kaluuya (Mac), Theo Barklem-Biggs (DC Firth), Robbie Gee (DCI Armstrong), Joe Dempsie (John), Jenn Murray (Natalie), Lily Loveless (Anna), Sophie Wu (Jay), Iain De Caestecker (Paul), Claire Rushbrook (Meg), Lloyd Hutchinson (Superintendent Clement), Craig Conway (Phil), Ruth Gemmell (Alice), Johnny Harris (Neil), Natalie Dormer (Sarah), Tom Ellis (Mark), Francis Magee (Dr. Tremlett), Chris Mason (Steve), Eleanor Matsuura (Vicky)
- Written By: Jack Thorne
- Directed By: Tom Shankland
- Ep: 6
- Episode 6
- Cast in Order of Appearance: Daniel Kaluuya (Mac), Joe Dempsie (John), Francis Magee (Dr. Tremlett), Iain De Caestecker (Paul), Ruth Gemmell (Alice), Lily Loveless (Anna), Claire Rushbrook (Meg), Sophie Wu (Jay), Natalie Dormer (Sarah), Tom Ellis (Mark), Johnny Harris (Neil), Robbie Gee (DCI Armstrong), Eleanor Matsuura (Vicky)
- Written By: Jack Thorne
- Directed By: Tom Shankland
| Iain De Caestecker .................. Paul Roberts |
| Natalie Dormer ...................... Sarah Etches |
| Tom Ellis ............................ Mark Etches |
| Johnny Harris ..................... Neil Valentine |
| Daniel Kaluuya ........... Michael "Mac" Armstrong |
| Daniela Nardini ............................ Helen |
| Claire Rushbrook ..................... Meg Roberts |
