This may have already been mentioned. I read a lot of the posts but not all of them so please forgive me if I am repeating something someone has already said. I read that she left her purse,etc. in the other building so it seems like her trip to the lab was going to be brief. Perhaps she was lured there by a phone call from someone who asked her to bring something to him or her. That could be why she has books or papers in her arms. She could have been planning to return to her office as soon as she delivered them to that certain person. I feel sure that LE would have already checked computer, phone calls, etc. I also remember reading in an earlier thread that someone who knew her implied that a situation had been going on for a while with Annie. The specifics weren't mentioned, but I got the impression that it could have been a person stalking her. That was in a newspaper or TV interview. I didn't see it personally, but a poster had mentioned it. Does anyone else remember reading that or am I getting another case mixed up with this one?