My biggest concern here is the sheer number of schedules that someone had to contend with to be able to kill all 8 of these people in one night-at four different locations. It truly boggles the mind that someone unknown to them, or even casually known to them through "business", would be able to pin these people down at just the right time.
I mean, let's think about it....
Chris Sr. worked odd jobs, so he never really had a set "daily" schedule. He also traveled fairly frequently to these out of town car auctions, some of which were as far away as Michigan. On top of that, he'd just had a new grandchild and had enough going on in his life in general to keep him fairly busy.
Gary lived in Greenup, and was only down visiting Chris Sr., so if he was a target and not just an inconvenience that needed killed because he was in the wrong place at the wrong time...how did anyone know he'd be there?
Frankie was known to hunt, fish, hang out with friends and go mudding, work on derby cars and (I think) worked at a saw mill as well. He had two kids...one of which he had with Hannah G....who could well have been awake at that time. This is not to mention Hannah's schedule...who anyone with a young baby knows...is wonky at best on a good day!
Errands, errands, more errands and a TON of sleepless nights.
Dana worked an unexpected/last minute double shift that night that even she didn't know about until she arrived at work that day, so she got off WAY later than she expected to.
Hanna R. had a VERY, VERY new baby..and, again...sleepless nights. Up and down and up and down. Not to mention, I am sure sleeping arrangements in their new house had only recently been established, and were probably even stranger than normal at that time due to the new addition.
Chris Jr. was 16. I am sure he had a social life, and it has been noted that he had enough friends to keep him fairly busy.
Kenneth had a day job (I think? Though I can't recall where), and DS noted that the guy was known to get up at 5:30 in the morning to work on cars. He also went to auctions on occasion, and I'm sure he had some kind of social life since he wasn't with his wife anymore....he is a grown man, after all.
The variables at play here in their day to day, and even evening schedules, is ENORMOUS. So many people, all of them doing different things....however, in one night...all of them died at the hand of someone who went to their homes and systematically wiped them out. I don't think this was simply "luck" that whoever did this found them there...they knew. Somehow, they knew these people were home....
This is why I am stuck on it being someone close to that family. Not only did they know where their homes were, they knew how to get in them...they could navigate around all of those cars/animals in the dark...they knew about surveillance at some of the homes...they knew schedules...they knew about Dana's new house.