Wanneer genetisch gemanipuleerd voedsel leidt tot een genetische afwijking die vervolgens leidt tot massale geboortes van meerlingen, besluit de regering om per gezin slechts één kind toe te staan en meerlingen door de Child Allocation Bureau, geleid door Nicolette Cayman, in te laten vriezen tot er een oplossing voor handen is.
Nee, helaas is What Happened to Monday nog niet beschikbaar op Netflix in Nederland.
| Directing | Tommy Wirkola | Director |
| Camera | José David Montero | Director of Photography |
| Writing | Max Botkin | Writer |
| Editing | Martin Stoltz | Editor |
| Production | Catherine Dumonceaux | Executive Producer |
| Art | Iulian Bostănaru | Art Direction |
| Production | Max Botkin | Co-Producer |
| Production | Raffaella De Laurentiis | Producer |
| Production | Guy Stodel | Executive Producer |
| Production | Giles Daoust | Executive Producer |
| Production | Laura Grosu | Casting |
| Production | Gillian Hawser | Casting |
| Production | Philippe Rousselet | Producer |
| Art | Eduard Daniel Vraciu | Art Direction |
| Production | Thierry Desmichelle | Executive Producer |
| Production | Kerry Williamson | Co-Producer |
| Art | Joseph Hodges | Production Design |
| Art | Grigore Purcariu | Art Direction |
| Production | Adrian Politowski | Co-Producer |
| Production | Fabrice Gianfermi | Producer |
| Costume & Make-Up | Oana Păunescu | Costume Design |
| Production | Matthew Feitshans | Associate Producer |
| Production | Hester Hargett | Line Producer |
| Art | Dan Toader | Art Direction |
| Sound | Christian Wibe | Original Music Composer |
| Writing | Kerry Williamson | Writer |
| Visual Effects | Christian J Smith | Visual Effects |
| Sound | Karen Baker Landers | Supervising Sound Editor |
| Sound | D. Chris Smith | Sound Designer |
| Sound | Peter Staubli | Sound Designer |
| Sound | Todd Toon | Sound Editor |
| Sound | Balázs Varga | Production Sound Mixer |
| Visual Effects | Lucian Iordache | Special Effects Supervisor |
| Visual Effects | Huseyin Caner | Visual Effects Supervisor |
| Visual Effects | Michel Denis | Visual Effects Supervisor |
| Visual Effects | Dominique Fiore | Visual Effects Supervisor |
| Visual Effects | Ronald Grauer | Visual Effects Supervisor |
| Visual Effects | Bryan Jones | Visual Effects Supervisor |
| Visual Effects | Aurelie Lajoux | Visual Effects Supervisor |
| Visual Effects | Chevin Shafaghi | Visual Effects Supervisor |
| Editing | Peter Bernaers | Colorist |
| Crew | David Fleming | Additional Music |
| Directing | Monica Tatu | Script Supervisor |
| Crew | Gaute Storaas | Additional Music |
| Sound | Nicolae Comarzan | Boom Operator |
| Sound | Serbanescu Iulian | Boom Operator |
| Sound | Andy Koyama | Sound Re-Recording Mixer |
| Sound | Alyson Dee Moore | Foley Artist |
| Sound | Christopher Moriana | Foley Artist |
| Sound | Chris Navarro | ADR Mixer |
| Sound | Patricia Nedd | Foley Artist |
| Sound | Michelle Pazer | ADR Editor |
| Sound | Kyle Rochlin | Foley Mixer |
| Sound | Mike Tehrani | ADR Recordist |
| Sound | Dean A. Zupancic | Sound Re-Recording Mixer |
