“Would I Think of Suicide?” - The residents of Fairview learn the hard way that the world is a dangerous place, on ABC’s “Desperate Housewives,” SUNDAY, NOVEMBER 29(9:00-10:01 p.m., ET). In the wake of another attack, Angie decides the time has come for her and her family to leave Wisteria Lane; Bree and Susan are literally up in arms with one another as Bree’s affair with Karl becomes increasingly difficult to hide; Lynette’s pregnancy causes a rift with Gaby; and a confrontation between Mike and Katherine leads to a harmful and unexpected blow.