>> the disappearance of 34-year-old anna marie eerily mirrors that of kristine kupka. once more, a sibling's determination to find her sibling's missing body and the boyfriend under suspicion. >> i think she was really trying to break away from him. you know, and in the end he just got her. >> you always live with the pain. i mean, i miss my sister so much. you know, to have someone robbed from you, from murder, is the worst thing that can happen to anyone. ♪ each night i ask the stars up above ♪ >> angel's sister anna was last seen on august 19th, 1998, leaving her job in new jersey. she had recently confided in a few friends that she was pregnant.