Despite what I hear in some theories, I don't believe this killer knew either of the girls. (There is probably a small chance he had seen them somewhere before and/or maybe they had seen him, but none of the parties knew names.) The degree of planning, if any, that went into this is an interesting topic. For example, did the killer park at the far end of the cemetery or at the now demolished CPS building? That would almost seem to indicate that when this killer parked his vehicle he knew he was going to do something - kill, abduct, rape - when he went there. (I suppose the argument could be made that this killer always did this as he was always on the prowl for a victim.) OTH, if this was PURELY opportunistic he could have parked where everyone else usually parked. I do believe the choice of victims was opportunistic. If a petite 5', 100 pound blonde 20 something woman had been where Abigail and Liberty were that person would have been the victim instead. For Abigail and Liberty it was wrong place, wrong time.