beautiful house. right on the beach, right in newport. upstairs/downstairs, fully furnished. she had a picture of herself up in the upstairs bedroom, blown up. >> kind of a glamour shot. >> yeah. >> reporter: it never occurred to him, he said, that nanette and bill had anything more than a business relationship. >> it was a business relationship. if you looked at nanette and took into account her age and looked at bill and took into account his age, why would you -- >> orange county, california? hello? >> i guess i'm a rookie when it comes to orange county. >> reporter: when it comes to murder and relationships, sometimes two's company, three's a motive. if eric found out bill was much more than just nanette's mentor, was it a motive for murder? so in their interview, investigators got right to the point. what was he doing that night? >> i was with nanette at the soccer game. she dropped me off and took off. and i got dressed and went to work later on, probably around 9:30. >> reporter: curious thing about