muller, are you related to heather muller, who we've been talking about in court the past days?ll us what that relationship is? >> she's my sister. >> the relationship with you and with heather, was it such that you knew each other's clothing? >> heather was my best friend. i know everything about her. we shared clothing. everything that's hers is mine. everything that's mine is hers. >> i'm going to show you what's been marked for identification purposes as state's exhibit 250. can you identify this item. >> that's heather's sweater. >> the prosecution called experts who testified that the dna of both brothers was found on the two women and that heather muller's blood was on the clothes the brothers were wearing. >> a cutting from the t-shirt, stay in f, a statistical frequency of the chances of this being patch with heather muller? >> yes. the estimated frequency of it in the caucasian population is 1 in 6 quad drill yon. >> it seemed and overwhelming case. but the defense had another version of what happened that night, a night that had become known as the wichita horror. >>>