Na een tragisch incident verkast Molly naar een nieuw appartement. Ze hoort er verontrustend geklop, volgens haar een noodsignaal of een bericht in morse-code. Terwijl het geklop aanhoudend en erger wordt en ze in contact komt met de buren, wordt het duidelijk dat niemand anders de mysterieuze geluiden waarneemt.
Nee, helaas is Knackningar nog niet beschikbaar op Netflix in Nederland.
| Production | Federico Ambrosini | Executive Producer |
| Production | Erik Andersson | Producer |
| Editing | Erik Andersson | Editor |
| Production | Sara Törnkvist | Casting |
| Art | Elle Furudahl | Production Design |
| Costume & Make-Up | Elsa Fischer | Costume Design |
| Costume & Make-Up | Frida Dahlin | Assistant Makeup Artist |
| Costume & Make-Up | Hanna Zätterström | Makeup Designer |
| Production | Linnea Landers | Production Manager |
| Art | Miriam Myrtell | Assistant Production Design |
| Art | Elin Maria Johansson | Props |
| Art | Maria Chifflet | Property Master |
| Visual Effects | Victor Danell | Visual Effects |
| Crew | Nilla Hansson | Stunts |
| Crew | Tarmo Sakari Hietala | Stunt Coordinator |
| Camera | Joakim Arenander | Best Boy Grip |
| Camera | Johan Valentin Falklind | First Assistant Camera |
| Camera | Simon Mortensen | Second Assistant Camera |
| Lighting | Anton Sjöberg | Gaffer |
| Production | Roberto Nilsson | Location Production Assistant |
| Production | Stina Åman | Location Manager |
| Writing | Johan Theorin | Novel |
| Sound | Carlos Contreras | Sound |
| Sound | Ola Almén | Sound |
| Sound | Catrine Le Dous | Foley Artist |
| Directing | Kerstin von Bahr | Script Supervisor |
| Writing | Jimmy Karlsson | Script Consultant |
| Production | Lisa Gustavsson | Production Coordinator |
| Production | Anna Juggas | Production Coordinator |
| Crew | Jennie Kastberg | Legal Services |
| Production | Elvira Petersson Hansson | Production Accountant |
| Directing | Frida Kempff | Director |
| Writing | Emma Broström | Writer |
| Camera | Hannes Krantz | Director of Photography |
| Editing | Erika Gonzales | Editor |
| Sound | Martin Dirkov | Music |
