Jessica Wakefield is living a double life! At the same time she and her twin sister, Elizabeth, are helping their new friend, Sue Gibbons, plan her wedding, Jessica's meeting secretly woth Sue's finace, Jeremy Randall. Elizabeth warns her to stay away, but Jessica can't hep herself - she's never been so much in love!
When Jeremy tells her he can't go through with marrying Sue, jessica is estatic. But tragedy intervenes when Sue is stricken by a deadly disease, and torn by guilt, Jeremy decides he must walk down the aisle.
Will Jessica stand by and let Jeremy say "I do"?

Elizabeth was so nervous as she stood next to Jessica at the wedding that she could feel her hands trmbling. Please behave yourself, Elizabeth silently begged her twin. Don't spoil this moment for Sue! This could be one of the last happy moments of Sue's life.
Elizabeth turned her gaze toward Jeremy and saw something that caused her heart to constrict. He wasn't looking at Sue! He was gazing into the eyes of Jessica! She looked at Jessica and saw that she was staring at him as well. Elizabeth knew her sister well enough to know that she was trying to send some ssort of terrible message to Jeremy.
Elizabeth didn't think her nerves could take much more of this. Suddenly, Elizabeth sensed Jessica's body tense up. hurry up! Hurry up! Elizabeth felt herself break into a sweat.
"If any man or woman knows of any reason why this couple should not be joined as one under the realm of god, speak now or forever hold your peace."
Elizabeth held her breath and closed her eyes.

Sweet Valley has never been so shocked! Double Crossed