The nation's oldest cold case has officially been solved. There is an abundance of cold cases waiting to be solved. 55-years-ago, on December 3, 1957, a 7-year-old child, Maria Ridulph went missing from a street corner in Illinois. Her body was found 5 months later in a field roughly 120 miles from her home. Maria’s neighbor, Jack Daniel McCullough was a 17-year-old at the time of the crime and was recently convicted in her abduction and murder.