Where are the Mcstay's? xx

I could not sleep last night thinking about the McStay family! They have been missing for nearly 2 years. My first fear came, when i heard the words Craig's list. Could it have been a stranger, that brought harm? Who was that knock on the door, while she spoke to her friend? Did someone over take the family? Were they too trusting? To me they left quickly and planned to return. Where did they go? Were the passports ever processed? So many questions! Who are the people in the video.....does anyone recognize themselves? xx