It looks like the defense is taking the right approach - they will focus on the timeline. Nothing else matters if there wasn't the opportunity for him to kill her.
I think that is right. I also think MM did everything in his power to muddy the timeline to make it seem like he didn't have an opportunity.
Last evening on HLN it was reported that a fireman told investigators that MM had stated that he had only been gone from the house 10-15 minutes before he returned w/ Ada and discovered Michelle. (At least I think that was what was said, it was late and I was half asleep.)
Alibi/timeline better be down to the second with sterling silver eye witnesses. Here is what Courtchatter has on their site:
Prosecutor Grunander showed Robinson a map that included MacNeill's home, the USDC (where MacNeill worked), and Ada's school (the youngest MacNeill daughter who found Michele dead in the bathtub). Robinson said that he drove the route from MacNeill's home to the USDC approximately six times. Robinson drove the route at different speeds.
At 30mph, (five different tries) it took an average of 4 minutes 50 seconds.
At 25mph, it took 5 minutes 39 seconds
At 50mph, it took 3 minutes 7 seconds
Robinson measured the times between the USDC and Ada's school four times. The time averaged 1 minute 25 seconds.
School to home averaged about 4 minutes 30 seconds
On cross examination, Spencer asked Robinson how long it took to walk out of the home to the car. He responded about 23 seconds.