Desperate Housewives > Katherine Mayfair and Family

The fourth season began being broadcast on September 30, 2007, and its main mystery revolves around new neighbor Katherine Mayfair and her family, who returns to Wisteria Lane after twelve years away, whose daughter remembers nothing about living on Wisteria Lane. Also, Lynette battles cancer; the newlywed - but unhappy - Gabrielle starts an affair with her ex-husband Carlos; Susan and Mike enjoy life as a married couple and learn that they are expecting a child; Bree fakes a pregnancy and plans to raise her teenage daughter's illegitimate child as her own; and Edie schemes to hold on to her new love, Carlos. A gay couple from Chicago - Lee (Kevin Rahm) and Bob (Tuc Watkins) - become residents of Wisteria Lane when they move into the house formerly occupied by Betty Applewhite (Alfre Woodard), and Gloria and Alma Hodge.