[afc wimbledon]

The reason it points to the husband is because it doesn't really point to anyone else, I don't see it as a drug deal gone wrong, they had just arrived, barely time to unpack let alone find a connection, and even in Mexico you don't kill a gringo over a few sticks of sensi, nor do you send the wife on her own to pick it up at 2am or the like.

There is also little reason for the wife to be wandering around at that time as well. My absoloute guess would be the wife stayed out later than the husband who was tired/drunk after the flight, she came back way too late and drunk and he lost it, then got scared crapless at the prospect of getting busted for beating his wife in Mexico and tried to hide the crime in a hurry.

I doubt we will ever know what happened, the Mexican authorities don't care, the husband will hire a local attorney who will pay off the appropriate people and he will be sent home.