It might have been possible depending how they were sleeping. If they got the guy first and he was sleeping alone. If they were split up in different rooms with no more than 2 to a room, maybe. It would still be very difficult for this to not wake up others around the house with just 1 person, everything would have to go just so in their favor.
I’ll guess two (at least).
Members of the football team or basketball team two of the girls either broke up with or refused to date? /shiny side out.
Well, hey, too many “Forensic Files” shows. So admittedly, that’s just a guess.
The average person doesn’t have Seal Team skills.
Has to be at least two guys, IMHO.