Hey, everyone- this is my first post here on Websleuth; I've come up with a few thoughts relating to this whole case that may or may not have been addressed already (haven't quite waded through 100% of the 50+ pages of this thread), so bear with me.
1) Supposing for a second that JC is guilty, it might (depending on the dog's personality) make sense that the dog didn't start barking. A lot of the couples that I know (myself and my bf included) wrestle around; if he was able to subdue her quickly enough, the dog may have assumed that it was just a play wrestling match, which can sound realistic- one of my college room mates and her bf put up quite a stir with some enthusiastic play wrestling matches one semester.
2) This may just be how I'm interpreting it, but the transcript from the 911 call made it sound like he either was not at the condo yet (so how would he know about the car/purse/phone/etc?) OR that he had left the scene, done an unknown something, and then made the call.
If most people were put in this situation, they would have stayed at the condo and had the cops meet them there ASAP if they had already checked out other possiblities.
3) JC mentions in the 911 call that there is a Sacred Heart festival down the street.
The only Sacred Heart that I'm familiar with is the Sacred Heart Catholic church; its also the main query that comes up in a Google search.
Why would he mention the sketchy characters at a church funded festival? Is this a throwback to the Wiccan connections others have mentioned?
4) Someone asked if today's young women would answer their doors late at night.
I'm 22, female, and probably wouldn't even answer the door if someone randomly knocked on it much after 9:30 or 10pm unless I already knew they were coming.
However, I just moved out of a college town and knew plenty of women my age who didn't even understand what being careful meant. You could go up to a door and knock at 2am if you wanted- there'd be a 95% chance that someone would just fling the door open without checking it out first.
I think a lot of that habit comes from the dorms where you can, for the most part, fling the door open and be OK no matter who's on the other side.
Do we know if Katelyn ever lived in dorms to develop that habit? Also, how safe is the area around her condo?
5) Are there gangs in the area?
I live in an area of VA with high gang activity, and just a couple years ago there was a string of arrests of well-respected high school kids who were active in gangs- but until they were arrested and everything was brought to light, no one had a clue.
One of the big things the gangs do around here is stalk and abduct or kill women; new members have to do it to be admitted into the gang.
This doesn't have the chaotic feel of a gang crime, but stranger things have happened I guess.