The family of 15-year-old, Riley Crossman, assumes she walked to school just like every other day. Panic sets in when they get the call that she never arrived. After her body is found in the woods of West Virginia, police arrest a man who was let into her home.Nancy's Expert Panel Weighs In:Karen Smith:   Forensics expertDarryl Cohen: Criminal Defense AttorneyAshley Kelly:  Licensed Clinical Social WorkerDr. Michelle Dupre: South Carolina Medical ExaminerDavid Mack:   Syndicated Radio Host