Welcome to Websleuths, Bookkeeper. I was wondering if you’d show up here. I think you are on the right track with your thinking, but let me tell you where I believe you are wrong. If it was someone Sherrill knew, I think he would most likely have been alone. I have read before that Sherrill was a very “security minded” person. The police website has the last known contact with her as a phone call with a friend at 11:15pm so it is safe to say it would have taken place after then. I highly doubt Sherrill would have allowed any strange men into her house after 11 pm no matter if they were with someone she knew or not. If someone knocked on her door any time between say midnight and 2am, do you really believe there is any chance Sherrill would have let them in? Or even have answered the door? I don’t. If Sherrill was the target of some plot or a planned out event by someone she knew, and they were let into the house before midnight, they would have been able to subdue her and leave well before Suzie and Stacey arrived home a couple of hours later. I seriously doubt they’d hang out and wait for a couple of hours and risk being caught even if they wanted to get Suzie also. After all, it was graduation night and Suzie was supposed to be spending the night at a hotel in Branson. However, if it was just one man whom she considered to be a “friend” that came by before midnight I can see her letting him in, but still most likely hesitantly. If it was one or two people really late at night I believe they wouldn’t have to have been “familiar” or known to Sherrill at all and could have found a different way in. Possibly an unlocked door or open window due to the earlier furniture varnishing she was doing. They would easily have been able to hide and keep her subdued and quiet in her room after being interrupted when the girls arrived unplanned and got ready for bed.