A 52-year-old man accused of fatally stabbing an acquaintance whose body turned up in an East County field nearly 31 years ago pleaded not guilty Tuesday to a murder charge. June 13, 2017 EL CAJON (CNS) - A 52-year-old man accused of fatally stabbing an acquaintance whose body turned up in an East County field nearly 31 years ago pleaded not guilty...