The two sisters
The two sisters seemed a bit chilling. Maybe they taken a dislike to John, remember the scene where they were laughing wildly at the thought of John's death.
shareI think, they didn't laugh at the thought of Johns death. Remember, one of them had one of the small family pictures in her hands, so they probably laughed about an odd family story or whatever. Maybe it was even just Johns imagination, he thought from the start the two were devious. The scene indeed suggested that the two sisters were evil, but in reality they were not.
shareI agree, this was just a way of making us think that the sisters wree evil in a way when they were not
It is part of the way the Roeg films have this pecul;iar editing, in another scene of the film, in the Venice Hotel room scenes from later on are edited in