Lois & Clark: The New Adventures of Superman: Season 4, Episode 19
Voice from the Past (26 Apr. 1997)
Lex Luthor's son wreaks havoc in Metropolis--and in Lois and Clark's marriage. Lois is kidnapped, while Superman investigates whether he can have children. Third of a three-part episode, "The Lex Files: A Lois & Clark Trilogy."