by then they had a third child, jenelle. their days were filled with shuttling kids to school and day care, and raising funds for their next overseas mission. life with three young kids was busy, hectic, normal. but then came valentine's day, 2013 when nathan pulled into their driveway mid-afternoon and discovered something terribly wrong. >> i can see that the window pane was broken. the glass is on the ground. and at that point i begin to put things together and someone had broken into the home. and at that point i called the police, called 911. >> 911. where's the emergency? >> ah, we got a break-in. >> reporter: a daring burglary in the middle of the day. that would rob this family of everything. >> there would be no more cards, candy or flowers this valentine's day, no one can find denise. >> she hadn't answered her phone calls. she hadn't answered her text messages. >> what police do find is terrifying. >> everything stopped. i just kept looking at my daughter. my world had just been shattered and i had to tell her at