this hot young woman who had been brought in to replace their missing daughter. right. right. exactly three months to the day. i can t even imagine what they were thinking. reporter: pegye s family wasn t alone. detective sean murphy had also noticed the new woman in eric bechler s life. she was ostentatious. she was just a hot number as they say. she was cohabitating with him right after this horrible boating accident with his wife. reporter: so murphy arranged to bump into tina. said hey, if you have any information about this boating accident involving eric, your boyfriend, just give us a call. i gave her my card with my number on it. reporter: nothing came of it. tina didn t call. but someone else did. coming up, the best friend has second thoughts. kobe laker goes under cover. i basically made you look like a saint. and the new girlfriend is