Disney+ has unveiled new casting additions for the second season of “Rivals,” with Hayley Atwell and Rupert Everett joining the ensemble as guest stars in the drama based on Jilly Cooper’s bestselling novel.

Atwell will be playing Helen Gordon, Rupert Campbell-Black's ex-wife and mother of his two children, Marcus and Tabitha. Everett is set to take on the role of her husband Malise Gordon, Campbell-Black's former show-jumping coach and mentor.

The first season of the Disney+ adaptation of Dame Jilly Cooper's hit 1988 novel of the same name was a unanimous hit — here's everything we know about its second season.