The spider continued to appear throughout the movie - the point was to for us to understand who had really done the real damage - one point I noticed In the trailer the phone message her husband found said "Can't wait to touch you.." and in the same scene in the film,the message said "Can't wait to get in touch with you". The film itself was supposed to be about mistakes (in what you see or find) but the mistakes were not his. And Leila gave us all the hints that she was lying, pulling away from her husband every time he tried to make love to her and spending the rest of the night with her daughter. Her anger with him win anything disappeared sealed it all. It was somewhat confusing that she broke down and cried when learned that her husband had found the camera and viewed the film of her betrayal. It didn't help that there was no explanation of what happened where or when that led to her betrayal of her family.
