In an attempt to pull her family together, Adèlle travels with her young daughter Sarah to Wales to visit her father. The morning after they arrive, Sarah mysteriously vanishes in the ocean. Not long after, a little girl bearing a striking resemblance to their missing daughter reveals that she has retuned from the dead — and that Sarah has been taken to the Welsh underworld.
Unfortunately the movie The Dark is not yet available on HBO Max.
| Writing | Stephen Massicotte | Screenplay |
| Production | Jeremy Bolt | Producer |
| Production | Robyn Ray | Casting |
| Camera | Christian Sebaldt | Director of Photography |
| Production | Steve Christian | Executive Producer |
| Costume & Make-Up | Ffion Elinor | Costume Design |
| Editing | Chris Gill | Editor |
| Directing | John Fawcett | Director |
| Writing | Simon Maginn | Author |
| Production | Paul W. S. Anderson | Producer |
| Art | Andrew Wilson | Dressing Prop |
| Art | Lester Rowbotham | Standby Carpenter |
| Sound | Matthew Skelding | ADR Recordist |
| Art | Sam Stokes | Standby Art Director |
| Sound | Andrew Stirk | ADR Recordist |
| Costume & Make-Up | Christine Whitney | Makeup & Hair |
| Costume & Make-Up | Simon Thompson | Hair Department Head |
| Sound | Michael Miller | ADR Recordist |
| Art | Dan Maslen | Storyboard Artist |
| Costume & Make-Up | Vikki Illing | Costumer |
| Production | Brendan Donnison | ADR Voice Casting |
| Sound | Graeme Stoten | ADR Recordist |
| Sound | Zak Melemendjian | ADR Recordist |
| Sound | Lionel Selwyn | Foley Artist |
| Sound | Lauren Ana Walker | Dialogue Editor |
| Costume & Make-Up | Maxine Brown | Costumer |
| Sound | Jason Swanscott | Foley Artist |
| Sound | Ben Meechan | Sound Effects Editor |
| Camera | Howard Baker | Camera Operator |
| Camera | Gerry Vasbenter | Steadicam Operator |
| Costume & Make-Up | Leigh Nicol | Costume Supervisor |
| Art | Eve Stewart | Production Design |
| Art | Ed Walsh | Art Direction |
| Sound | Howard Bargroff | Sound Re-Recording Mixer |
| Directing | Elizabeth Tremblay | Script Supervisor |
| Sound | Dan Johnson | Sound Re-Recording Mixer |
| Crew | John Harvey | CG Supervisor |
| Production | Johnny Bamford | Location Manager |
| Production | Phil Gates | Location Manager |
| Production | Henry Woolley | Location Manager |
| Production | Della Moore | Production Accountant |
| Crew | Gareth Milne | Stunt Coordinator |
| Production | Ian Pollington | Location Manager |
| Costume & Make-Up | Erin Ayanian | Makeup Artist |
| Sound | Bernard O'Reilly | Sound Effects Editor |
| Lighting | John Donoghue | Rigging Gaffer |
| Camera | Giles Keyte | Still Photographer |
| Crew | Rob Deacon | Unit Publicist |
| Camera | Mark Wolf | Underwater Camera |
| Production | Jules De Barsham | Location Manager |
| Lighting | Phil Brookes | Gaffer |
| Sound | Kirsty Whalley | Music Editor |
| Costume & Make-Up | Zoe Brown | Hairstylist |
| Camera | David Odd | Camera Operator |
| Costume & Make-Up | Sue Ignatius | Makeup Department Head |
| Camera | Mark Milsome | Camera Operator |
| Production | Candice Fonseca | Production Manager |
| Sound | Allan Jenkins | Music Editor |
| Visual Effects | Adam Seeley | Animation |
| Visual Effects | Adam Gascoyne | Visual Effects Supervisor |
| Production | Suzanne Smith | Casting |
| Costume & Make-Up | Sarah Monzani | Hair Designer |
| Crew | Graham Thomas | Carpenter |
| Crew | Mark Overall | Carpenter |
| Crew | Terry Law | Carpenter |
| Art | Andrew Grant | Supervising Art Director |
| Production | Robert Kulzer | Executive Producer |
| Art | Jo Riddell | Art Department Assistant |
| Camera | Alex Tate | Grip |
| Art | Justin Overhill | Standby Painter |
| Costume & Make-Up | Sarah Monzani | Makeup Designer |
| Production | Paul Tamasy | Executive Producer |
| Costume & Make-Up | Maralyn Sherman | Prosthetic Makeup Artist |
| Crew | Gerard Baldwin | Driver |
| Lighting | Joe Judge | Best Boy Electric |
| Art | Rowanna Lacey | Assistant Art Director |
| Production | Robert How | Co-Producer |
| Visual Effects | Melissa Butler Adams | Digital Compositors |
| Sound | Edmund Butt | Original Music Composer |
| Lighting | James Bradshaw | Electrician |
| Sound | Liz Gallacher | Music Supervisor |
| Sound | Toby Wood | Scoring Mixer |
| Crew | Steve Harrow | Post-Production Manager |
| Sound | Geoff Alexander | Orchestrator |
| Visual Effects | Jayson King | 3D Animator |
| Directing | Mark Egerton | First Assistant Director |
| Production | Sarada McDermott | Production Coordinator |
| Sound | Matthew Desorgher | Boom Operator |
| Crew | Alexander Berner | Creative Consultant |
| Sound | John Rodda | Production Sound Mixer |
| Visual Effects | David Harris | Special Effects Supervisor |
| Production | Oliver Barron | Production Runner |
| Sound | Courtney Bishop | ADR Recordist |
| Costume & Make-Up | Nicola Rodd | Costume Assistant |
| Camera | Harry Bowers | Focus Puller |
| Production | Peter Smith | Assistant Location Manager |
| Production | Jacky Holding | Assistant Accountant |
| Costume & Make-Up | Liz Phillips | Makeup Trainee |
| Directing | Grant Harvey | Second Unit Director |
| Sound | Geoff Alexander | Conductor |
| Production | Andrew Gwyn Davies | Assistant Production Coordinator |
| Production | Jane Trower | First Assistant Accountant |
| Directing | Oscar Beuselinck | Second Assistant Director |
| Art | Temple Clark | Storyboard Artist |
| Sound | Simon Price | Supervising Dialogue Editor |
| Crew | Graham Hills | Special Effects Technician |
| Costume & Make-Up | Jemma Scott-Knox-Gore | Contact Lens Technician |
| Camera | Adam Cowan | Camera Loader |
| Crew | Chris Ingram | Set Runner |
| Directing | Lucy Egerton | Third Assistant Director |
| Art | Matt Curtis | Title Designer |
| Camera | Inderpreet Bahia | Camera Trainee |
| Sound | Edmund Butt | Music Score Producer |
| Sound | Melissa Lake | Foley Artist |
| Editing | Adam Inglis | Colorist |
| Production | Peter Bach | Head of Production |
| Editing | Eddy Kolkiewicz | Negative Cutter |
| Art | Nurey Al-Kahzrajie | Art Department Trainee |
| Production | Bev Lawley | Extras Casting |
| Crew | Roger Kendall | Health and Safety |
| Directing | Karen Fryer | Continuity |
| Camera | Chris Clarke | Clapper Loader |
| Production | Katie Elson | Location Assistant |
| Visual Effects | Aeon Henderson | Digital Compositor |
| Production | Rob Craine | Production Assistant |
| Editing | Emanuele Giraldo | Assistant Editor |
| Crew | Carolyn Matini | Special Effects Assistant |
| Editing | Marcus Alexander | Digital Intermediate Producer |
| Production | Jan Hogevold | Production Executive |
| Art | Don Santos | Dressing Prop |
| Sound | Barnaby Smyth | Foley Supervisor |
| Production | Vanessa Baker | ADR Voice Casting |
| Production | Thomas L. Carter | Casting Assistant |
| Production | Anna Bolt | Post Production Coordinator |
| Crew | Anne Marie Speed | Dialogue Coach |
| Writing | Rory Gilmartin | Script Editor |
| Sound | Dan Green | Dialogue Editor |
| Crew | Kim McGarrity | Stunts |
| Crew | Gary Connery | Stunts |
| Crew | Ruth Jenkins | Stunts |
