Wonder Woman, Vol. 2 #15 (1987)

Swan Song
Maxine Sterenbuch, saved from an assassination attempt by Solomon Buchman, finds out her best friend is really the Silver Swan. Solomon intendes to find Valerie Beadry, the Silver Swan, and kill her for murdering his father. Valerie Beaudry was turned into the Silver Swan by her abussive boyfriend, crime lord Henry Cobb Armbruster, intendes to use the Silver Swan to attack Wonder Woman at her charity fair for unknown reasons. Meanwhile, Diana is confused by her romantic dreams of Superman.
Release Date: 1987