All eleven starring actors from the previous season returned for this season.
Lyndsy Fonseca was cast in the new role of Dylan Mayfair, Katherine's daughter and part of the season's mystery.
Nicollette Sheridan portrayed Edie Britt, who faked suicide in the previous season finale.
Ricardo Antonio Chavira portrayed Carlos Solis, now divorced from Gabrielle but still in love with her while involved in a relationship with Edie.
Dana Delany is introduced in the role of Katherine Mayfair, whose mysterious arc is the season's main storyline.
Five out of six actors who received "also starring" billing from the previous season returned.