OK, this may be long, so please bear with me. First, I must state that for myself, I am 100% convinced that LE has the right suspect in custody.
However, I have always been a debater, both for and against things I believe in, and I do have some legal background.
That being said, to even think about the SODDI defense, we'd have to begin by listing the options that the defense has for their client:
1. Someone close to KC, who knows her, who knew baby Caylee, and who had access to the house, to car keys, to KC and to Caylee.
2. A complete stranger, child perp, molestor, or killer, loose in the area.
3. Someone in KC's family.
4. An Aquaintance of KC's - not a close friend, but someone who perhaps became obsessed with her daughter.
For each of these to even be considered as a SODDI defense, we would then have to find:
#1 - Motive
#2 - Opportunity
#3 - Intention
#4 - Some type of evidence in support of that theory
#5 - Witnesses
So, for any of the above theories to hold any water, (am I missing any? I didn't include accidental death that was covered up simply because I think it goes beyond the scope of SODDI.) one would have to look at just the facts, not the opinions, and find a way to argue even in light of the defendant's multiple lies (remember, according to CA lying is not a crime).
I am going to try and put together an argument for each of the 4 theories, and hopefully someone can bang each one down until there's nothing left to grasp onto.