You can’t make a movie called “Revenge of the Middle-Aged Woman” without someone to set the vengeance in motion. Brian Kerwin is that man.

Kerwin, who starred in Showtime’s TV-biz satire “Beggars and Choosers,” has signed on to star opposite Christine Lahti in “Revenge,” scheduled for sometime next season on CBS. Bryan Brown (“Cocktail,” “Along Came Polly”) and Abby Brammell have also joined the cast.

Lahti (“Chicago Hope,” The WB’s “Jack & Bobby”) stars as Rose Lloyd, a book-review editor at a newspaper whose husband (Kerwin) informs her that he’s leaving her after 25 years together. Adding insult to injury, the other woman is Rose’s assistant (Brammell), who has also usurped her at work.

After a bout of self-pity, Rose eventually comes to realize that things might work out all right and even learns to have a sense of humor about her situation.

Brown plays a man with whom Rose had a relationship before meeting her husband.

Nancey Silvers (“The Elizabeth Smart Story”) wrote the script for “Revenge,” based on a novel by Elizabeth Buchan. Sheldon Larry (“I Want to Marry Ryan Banks”) is directing.

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