he pressed for more on their relationship which had started when they were students at ucla, they dated on and off until john got engaged to sherry and even then -- you are convinced that the relationship that john had with stephanie lazarus overlapped with his wife. >> we know he was engaged and he was intimate with stephanie lazarus, there was a love triangle and stephanie lazarus had deep feelings for john rutten and may have had a motive to harm sherry rasmussen. >> reporter: was sherry's killer a scorned lover or a jealous co-worker. >> we had two women on the list that had a motive. >> debra the nurse and stephanie lazarus. >> correct. >> a few weeks later, cops tracked down debra and secretly