I can't imagine the horror.

I also can't imagine leaving my children alone in a hotel room while I went to a restaurant.

Madeleine McCann disappeared May 3 when her parents left her and her 2-year-old twin siblings alone in their hotel room while they went to a restaurant in their hotel complex in Praia da Luz, a resort town in Portugal's Algarve region.

I'm praying for Madeleine McCann's safe return, and for her entire family.

However, this is a textbook example of a preventable tragedy, if there ever was one.