Truly a serious question.

I don't understand why Robert Wagner didn't check on his wife a few times instead of sitting around drinking with that Davern guy and why didn't he call call the authorities immediately when he found her missing, turn on the search lights, call the neighboring boats or do whatever it would take to find her. She was not found until the following morning and it is documented that she had not been dead that long when she was found.
If he had begun the search the second he found her missing she would be alive today.