In My Sister's Shadow is a 1999 American made-for-television drama film directed by Sandor Stern and starring Nancy McKeon, Janet Leigh, Thomas Joseph McCarthy and Alexandra Wilson.
[1] Joan Connor (Nancy McKeon) is a lonely florist who has always played second fiddle to her pretty younger sister Laurie (Alexandra Wilson) due in part to the well-meaning but misguided signals sent out by their mother Kay (Janet Leigh).
When Laurie finally leaves her longtime ex-boyfriend Michael (Thomas Joseph McCarthy) after a roller-coaster relationship, Joan is there again to pick up the pieces.
Michael, on the other hand, can't get over the breakup and begins stalking Laurie and her new beau, all the while trying to seduce and insinuate plain Joan into his life — and turn her against her sister.
Laurie and Mark decide to get married, which pushes a psychotic Michael over the edge and forces Joan to make some kind of decision.