An 18-year-old Monessen man was stabbed to death early Wednesday morning;March 12;1980;in a theater in downtown Pittsburgh. The victim;Ronald Wells of 203 Schoonmaker Ave.;Monessen;was stabbed in the heart about 3 a.m.at the Sneak-A-Peek theater;803 Liberty Ave.;according to city police. He was pronounced dead at 4:16 a.m.Wednesday at Allegheny General Hospital after nearly two hours of emergency treatment at the hospital. Wells was born Jan.5;1962;in Monessen;the son of Charles Wells;Sr.of 203 Schoonmaker Ave.and the late Mona Allen Wells. He attended Monessen High School. Surviving;in addition to his father;are three brothers;Charles Jr.;and Dale;both at home and Stephen;who is in the United States Air Force in England;three sisters;Diane Frost of Donora and Karen and Carol Wells;both of Pittsburgh;and many cousins. Friends may call from 2 to 4 and 7 to 9 p.m.Friday at the William R.Taylor Funeral Home in Monessen. Services will be held at 11 a.m.Saturday at the funeral home;with the Rev.E.E.Davis officaiting. Burial will be in Belle Vernon Cemetery.