Closing arguments in Michael Jackson death trial begin today – did the prosecution prove its case?

After six weeks of dramatic testimony, the involuntary manslaughter trial of Michael Jackson's doctor Conrad Murray is coming to an end. Jurors will hear closing arguments from the prosecution and defense Thursday. Deliberations on Dr. Conrad Murray's fate expected to begin late Thursday or Friday.

Carol Costello sits down with CNN legal contributor Paul Callan to discuss the key question: did the prosecution prove its case?