Great thread idea, by the way.
I also go back and forth on questions about JI and if he knew anything, what he knew, when he knew. I do think that it is very possible that something could have happened to Lisa either Sunday night or Monday. There is no verification that anyone saw Lisa during this time. For all we know, Lisa could have passed away and disposed of the night before this incident (Sunday night). Or, there was all day Monday. No one knows what these people did Monday before JI went to his night job. Also, weren't the little boys in school during this time? I mean, if JI and DB were alone in the house with Lisa, who knows what could have happened?
I don't take too much stock in how JI acts because none of us know him and it sounds from some sources that this is just the way he acted before Lisa went missing. But, I do see a terrible amount of pain in his face. I don't see that in DB's face. Even when she is crying, I'm amazed at how quickly she recovers from it. And, is she crying because someone took Lisa away, or is she crying because she accidentally caused Lisa to die? JI, on the other hand, looks absolutely miserable.
And, it is odd that they both seem to be so connected at the hip. The majority of these type of cases tear a marriage apart, rather than bring them closer. So, is this because one is lying and the other totally believes them. Or, is it because an accident happened that they were both involved in and so they are bound by that connection, like John and Patsy Ramsey?
I don't know the answer for sure, but I sure hope that someone finds out sooner rather than later. Lisa deserves to be found!