It's not exactly as clear as I had hoped, but newscasters are saying that "it's just the tip of the iceberg." The three people named as being seen on CCTV at Applebee's were JS, his fiance Anna, and her dad. They met there for dinner and attempts to get hold of Melinda (and Kyle) failed, but nonetheless: they continued to have dinner there. It is not clear where the baby was, but it was made clear that Kyle was back at the house, and that he may have witnessed the attack on his mother.
After dinner, the three of them (four if the baby was with them) returned to the house. They tried to open the garage door to go inside, but it wasn't working for some reason. The reporter said that Kyle was the one who let them inside the house. No mention whatsoever of where Anna, the baby, or Megan were. Just that three of them left Applebee's and returned home.
All vehicles were confiscated on Monday 10/23 including Jeff's red Chevy truck. The knife was located later on in the back, under the bench seat and hidden by personal items. It took until Tuesday 10/31 to verify all evidence inside the truck (knife, DNA, blood, etc.) and that's why it took a week to arrest JS--LE was awaiting forensic results.
It was also established at some point that JS had made several false reports re: theft, attempted burglaries, and suspicious activities in and around the house.
The arraignment of JS will be Friday 11/03 at 10 a.m. EDT.
Nothing was mentioned about why no one chose to return home when Kyle and Melinda didn't show up at the restaurant for dinner. Also: nothing was mentioned about the supposed text message from Melinda to Bruce around 4:30 p.m. about meeting at the Brew Kettle.