In 1982, L'Engle published a sequel entitled "A Severed Wasp", in which Katherine, now an elderly widow known as Katherine Vigneras after her marriage to her piano teacher and mentor Justin Vigneras, looks back on her life while trying to survive and unravel a frightening mystery at the Cathedral of St. John the Divine. The sequel shows that Justin and Katherine married and raise two children, fathered by other men since injuries Justin sustained in World War II left him unable to father children or play the piano professionally. He becomes a composer and manages Katherine's career, and is deceased at the time of "A Severed Wasp".