Captured by an opposition group

I was traveling abroad , walking down a city street with several others and happened upon a large group of protesters. A red bus pulled in front of the protesters , bringing more of them to the group . I noticed several suspicious people walking throughout the crowd. Somehow I knew they were suicide bombers and were going to bomb the protesters. They noticed me and knew I knew who they were. The next thing I know , I was captured and put in a small office waiting room. All the people in my traveling group were there with me . One by one my fellow travelers were led away by women in burkas. Somehow I knew they were going to interrogate us and cut off our ears. Before they came to get me , they suddenly just let us go. As we were leaving a travel mate of ours noticed that only one of our group had her backpack returned to her. After seeing this and asking her why she got her bag back , she just replied .....she didn't know why . I then knew she was asked and agreed to be a spy for the opposition group and was going to tell them every move the protesters made so they could bomb them. I pulled my sister aside to tell her to stay away from this girl and to tell her nothing. ( this was a tall thin girl with long straight hair , and not my real sister , but in the dream she was my sister.) Next we were getting up the next day in our hotel room when a letter arrived with pictures of us all sleeping an a copy of our itinary for the day , this to me , proofed we had a spy among us . This is where I woke up very confused by the dream and panicked because I had overslept.