>> cathy suh is in prison, serving a sentence for a crime they were able to prove she committed. this crime has the drycleaner also be an unsolved case. >> i believe with all my heart and sincerity that he was responsible for this. he was the man for slashing my mother 33 times. he shattered my life. he was the man responsible for putting me in this place. but in the same breath i say who am i to decide that? on certain days i wake up and say oh, my god, what have you done? what have you done? you took another person's life. and i will always be a murderer. >> andrew was the last person to see my brother alive. it's hard to get over. but in another sense, i remember