Even in the scenes where her character is not being filmed, Gemma Arterton would still insist on being handcuffed to the bed to help her performance.
Gemma Arterton refused the use of a body double for her nude scene as she wanted to convey genuine fear.
Gemma Arterton was given a safe word for her to say if she felt uncomfortable in her nude scenes and wanted filming to stop.
Tommy Wirkola saw Gemma Arterton in this film and was impressed by her performance and decided to cast her as Gretel in Hansel and Gretel: Witch Hunters (2013).
The first word is spoken 5 minutes and 25 seconds into the film. Roughly another 4 minutes pass before the next one is spoken.