Dateline NBC : Prime Suspect episode who was convicted

Prime Suspect episode who was convicted

On the Dateline NBC Mysteries: Prime Suspect episode who was convicted for killing his wife after 16 years even though they never found the body. She was ready to move on and was writing letters to her lover. The son said the last time he saw his mother she was talking to his father out on the garage.
The children were divided on father's innocence or guilt. At the end of the episode the son, engineer, who believed his father was not guilty changed his mind and said he was guilty.

What are the victim's and convicted names?

Thanks in advance.

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