I agree with everyone else. It feels like A&E wanted to show that somehow, there were ambiguities and evidence of Scott's innocence that the cops overlooked, but all I'm taking away so far is that the case against Scott is 100% damning.
I actually lived in Modesto when all this was happening and followed the case closely. I thought I pretty much knew everything there is to know, but I was surprised learn something new from the first episode--that Scott and Laci had originally told people they weren't planning to have children. This was said as an aside by someone from Scott's family, like it was cute that Scott and Laci "changed their minds" about having kids . But to me, that only provides yet another piece of his motive. I don't believe for a moment that Laci was ever the type who would have chosen to remain childless. If she and Scott were telling people this early in their marriage, I bet it was something HE was pushing, and she was just going along with it to keep him happy.
His family's sharing that factoid only serves to make Scott look more guilty because it gives him an additional motive to be cold-hearted enough to kill his pregnant wife and their unborn child. He meant what they told people early in their marriage--he really never did want children, despite whatever act he may have put on during her pregnancy.
