Isabel Celis disappeared from her family\u2019s Tuscon home sometime in the early morning hours of April 20, 2012.\nDespite a massive search and intense police investigation, the child is still missing nearly five years later. An open screen suggests the six-year-old was snatched from her bedroom through the window. The father\u2019s remarkably calm call to a 911 dispatcher initially drew attention to him. Investigators have also looked at a man who lived with the family for a while. Nancy Grace discusses the case in this episode.