A who-is-it setting in the claustrophobic corridors of an abandoned and locked-off office building that has several guests invited to a party by their mysterious, unknown host. Only it is they who are the victims of their crimes. Suspense and mistrust are not the only stalker in this cat and mouse game of wits and fear. Who is the stalker? Why is he killing? And what is it exactly that everyone here has in common?
| Writing | Luis Cámara | Writer |
| Writing | Gabrielle Galanter | Writer |
| Directing | Luis Cámara | Director |
| Production | Daniel Baur | Producer |
| Production | Oliver Simon | Producer |
| Production | Carrie Hilton | Casting |
| Production | Tamara Notcutt | Casting |
| Sound | Florian Moser | Music |
| Editing | Wolfgang Weigl | Editor |
| Art | Tim Pannen | Art Direction |
| Costume & Make-Up | Susa Sasserath | Costume Design |
| Camera | Patrick Popow | Director of Photography |
| Costume & Make-Up | Sarah Wirtz | Key Makeup Artist |
| Costume & Make-Up | Vanessa Schneider | Makeup Artist |
| Production | Sascha Verhey | Production Manager |
| Directing | Julia Kopper | First Assistant Director |
| Art | Michael Kalden | Property Master |
| Art | Sabine Steudter | Set Dresser |
| Sound | Jörn Poetzl | Foley Artist |
| Sound | Benjamin Wolf | Foley Recordist |
| Sound | Michael Felber | Production Sound Mixer |
| Sound | João Da Costa Pinto | Sound Editor |
| Sound | Claudia Enzmann | Sound Editor |
| Sound | Oliver Schößler | Sound Assistant |
| Sound | Sven Mevissen | Sound Re-Recording Mixer |
| Sound | André Bendocchi-Alves | Sound Re-Recording Mixer |
| Sound | André Bendocchi-Alves | Supervising Sound Editor |
| Visual Effects | Nikolaus Logothetis | Visual Effects |
| Visual Effects | Daniel Stuebner | Visual Effects |
| Lighting | Raul Combé | Electrician |
| Lighting | Michael Koch | Electrician |
| Camera | Marco Dreckmann | First Assistant Camera |
| Lighting | Nico Nitsche | Gaffer |
| Camera | Urs Zimmermann | Key Grip |
| Camera | Claudia Melcher | Second Assistant Camera |
| Camera | Thomas Thiele | Dolly Grip |
| Production | Victor Jenkins | Casting Associate |
| Costume & Make-Up | Ilka Stoye | Assistant Costume Designer |
| Writing | Karoline Gallasz | Script Consultant |
| Directing | Heike Manzke | Continuity |
| Art | Thorsten Kuegler | Title Designer |
| Crew | Sander Jain | Set Runner |
| Crew | Carsten Vosskuehler | Set Runner |
