text "listen5" to 500500 to start your free trial today. >>> of all the homicides karen fraivillig has prosecuted, she found the case of sam dreher's murder especially frustrating. >> it's hard to remain unemotional in a murder. in the murder of an innocent person who did nothing except fall in love with another woman. >> reporter: michael minor may have shot sam, but prosecutor fraivillig believed danielle manipulated him to do it, and that her motive was more than just money. >> i think there was a financial motive, certainly. probably, the most overarching motive was just jealousy. despite the fact that she was conducting an affair of her own, i think that she was just completely enraged that sam started stepping out on her as well. >> reporter: but in order to prove that in court, fraivillig felt she would need something she didn't yet have -- a statement from michael saying danielle acted as his accomplice. so she waited, thinking time would compel him to come forward and admit danielle was involved. he never did. michael maintained danielle played no role in sam's murder. was thi