An enhanced color photo from an ATM surveillance video camera of a suspect in the Eve Carson homicide case.  Photography expert William E. Mathis enhanced the photo to further examine a dark spot in the photo, believed to be another person. (Photo courtesy of The Raleigh Chronicle and William E. Mathis)

An enhanced color photo from an ATM surveillance video camera of a suspect in the Eve Carson homicide case. Photography expert William E. Mathis enhanced the photo to further examine a dark spot in the photo, believed to be another person. (Photo courtesy of The Raleigh Chronicle and William E. Mathis)