Our eyes take cues from what we see on screen, whether we realize it consciously or not. In making The Voyeurs, the crew used classic thriller techniques to guide us and leave clues about who to trust and what to expect in every scene. Like seeing Pippa for the first time through the crack in the curtain at the start of the film, each shot in the film is purposeful. For example, nearly 12 minutes into the movie, Pippa and Thomas can be seen spying on their neighbors behind a large three-paneled window. Pippa stands on the left while Thomas drifts to the right, leaving a large third panel between them and symbolizing their eventual divide.
Later in the movie, the same technique is used when Pippa and Julia are at Spa Du Tilleul. While discussing Pippa's problems in the sauna, the pair sit close together, but when they move onto Julia's story, they're sitting in a tiled room with a huge frosted window between them, indicating that Julia is keeping her emotional distance from Pippa. Once we find out that Julia and Sebastian have been watching Pippa and Thomas the whole time, the camera angles begin to make even more sense.
Mirrors and lighting also play a key role in the film, often illuminating Thomas when he makes points about not spying on the neighbors and shrouding Pippa in darkness when she argues with him. When Pippa meets Sebastian in person for the first time, his face is shown via a reflection in a mirror beside the bar, indicating that he's two-sided. Towards the end of the film, after learning about the exhibit and Julia and Sebastian's secret, Pippa is also shown standing with a bathroom mirror behind her, alluding to the fact that she has a secret, aka her plan for revenge.
