As teenagers, Lex and Oliver went to the same prep school, where back in October, 1996, Oliver and his friends bullied Lex and his friend Duncan. Lex eventually turned on Duncan to gain their acceptance, prompting Duncan to throw himself off the roof. Ten years later, Lex and Oliver return to the school for a reunion and are startled when Oliver's old pals are killed in violent and mysterious accidents that point to Duncan's ghost seeking revenge for his betrayal. Meanwhile, Chloe and later Clark see satellite photos, provided from Oliver, that show at least four other craters were created around the world on the day he escaped from the Phanton Zone, causing him to believe that others may have followed him.
—Anonymous