her gray jetta still missing. her family's deep sorrow, now hardened into resolve to get justice for her. >> find out who did it, and punish him. punish him. >> to begin, the lead detective now assigned to king county's newest murder case, jesse anderson, set out to learn more about the victim. he paid a visit to her husband, david pietz, at the condo he and nici shared. >> how long have you been married? >> almost four years. >> david agreed to be audio taped and told detectives that nici had struggled with chemical dependency in the past. he then revealed something disturbing. recently, nici had again started taking prescription pills. >> is nici still struggling? >> she wasn't. but she hurt her back right before thanksgiving. she split the disk. >> because of a severe painful back injury, david explained, nici had reluctantly agreed to let her doctor put her on a carefully monitored prescription for percocet, a potentially addictive narcotic drug. >> at first, she had me keeping the pills and giving them to her