Back in April, 17-month-old Semaj Crosby was reported missing from her home near Joliet. After a little more than a day of frantic searching, she was found dead in that house. Caseworker’s from Illinois Department of Children and Family Services had visited the house a number of times, but investigators didn’t start typing up some reports from past visits to Crosby’s home until after the child was reported missing. That’s one finding from a Chicago Tribune investigation published today. Tribune reporter Gary Marx tells us more.