Superman & Lois season 4 ending explained: Who dies in the series finale?
Narration reveals that Clark and Lois enjoyed many happy years together following the events of season 4. That eventually came to an end when Lois's cancer returned in a more aggressive form. Surrounded by her family, Lois, the intrepid reporter, the love of Superman's life, dies, as Clark tells her, "Everything good in my life came from you."