that never happened. >> reporter: 2 1/2 years after shooting sam, michael minor agreed to plead guilty to second degree murder. >> and it will live with me forever, and it will haunt me forever. >> reporter: in exchange for his plea, michael received a sentence of 30 years. >> i would not give him anything less than that. i mean, he pulled the trigger. and he didn't pull it once. he pulled it four times. >> i was glad that he was going to jail. michael minor didn't just kill our brother. he has mortally wounded our entire family. >> reporter: michael minor never wavered in his statement that he acted alone. in the end, prosecutor fraivillig felt she didn't have enough evidence to charge danielle as michael's accomplice. >> i cannot just charge someone based upon my speculations, the family's beliefs and even the ugliness of these text messages is not enough unless i can show that there was a conspiracy. michael minor never gave me that information. >> reporter: what is your gut