The boy had been stabbed three times in the chest. One strike punctured the heart and would by itself have been fatal. The knife was driven straight in and jerked straight out again, one-two-three, like a bayonet. The weapon had a jagged edge, evidenced by shredding at the left edge of each wound and in the torn shirt fabric. The angle of entry suggested an attacker about Ben’s size, five foot ten or so, although the sloping ground in the park made this projection unreliable.
