investigation have been very active indeed. and now, in the last days of august, inspector frazier ritchie was closing in on a very hot target. but to understand how he got there, we need to go back almost to the beginning. it was minutes before midnight. may 20th, 2000, 11:29 hours before michelle lee disappeared. richie had gone to pay midnight visit to michelle's old high school friend, giselle diwag esteban. >> how long has she been missing? >> since yesterday. >> and have you guys tried calling her? >> i have no idea how to help you at this point. >> since one? >> i'm, almost a week now. to tell you to stay away from my daughter. >> so, clearly there was some animosity between gisele and michelle. so, inspector region's partner brought gisele downtown to the police station for a more in-depth conversation.