reporter: evidence found this january in this outdoor fire pit located in the home once owned by stacy stewart, the man the defense suspects was last seen with michelle harris the day she went missing. according to a filed motion, the items found by a forensics team include buttons, a partial shoulder strap from a bra, a knife blade, a woman's bathing suit, the latch of a woman's handbag, and two fragments of charred fabric, one dark blue or black, the other light colored. coloring of the clothe mag she will harris was wearing the night she disappeared. she had on, as was described, a navy blue golf or polo shirt and a pair of khaki shorts. >> reporter: now it's up to the judge to decide if the evidence is allowed to be introduced during the fourth trial. unlike with a jury, with a judge you just need that one person to feel, maybe there's not proof beyond a reasonable doubt. for the defense's perspective, that could be their best bet. >> reporter: cal and michelle met in 1987. he was a millionaire car salesman and she a pretty office worker. >> she was just a stunningly beautiful girl. she wa