Well, Patrick McDermott managed to disappear without a trace to Mexico. The private detective finally found him from a large group of the same ISP addresses that came into the website set up to find him. I contacted that PI and asked him if he was going to look into this case, but he said no, not until he was invited to. IE: paid.
Oh, and if what is being said is true, with John and Chandrika living separate lives, it doesn't sound like John is the jealous type. If she is going out on her dates and he is going out on his??? This doesn't sound like he might be inclined to want to kill Gavin for dating his wife again.
Who knows though?
I can totally see that John would be "okay" with his ex dating...but maybe he and his ex had a fight that night and Gavin rushed over and there were words and then a fight...but I would HOPE that the ex would confess all the LE. If something happened between Gavin and John that night, I would think SOMEONE in that household (2 other adults) would know something useful.
FWIW I don't know what Gavin made, but I know a lot of other people in the same industry and they make a good upper middle class income. They should have been able to afford their house (above post mentions $300k) with no problem. I wonder if they made a lot of costly renovations to the inside?