Some think he did kill the kids and then tried to kill her and cover it all up, while driving to get the kid medicine and takeaway she ordered.
Apparently he wasn't a good husband, you know quitting his job to work from home with a new job, getting in a nanny, allowing her to quit her job to be a sahm, getting her all the medical help she needed, getting family in to help out, taking the kids when she needed a break and and... Apparently a terrible father he was cause he's a Gemini. Also women don't strangle apparently.