Season 4 | Episode 17 | Aired 05/18/08
Katherine refuses to say anything, but Bree tells the police that Katherine shot him in self defense. All her friends confirm how scared she was of Wayne and the same cop who phoned Wayne earlier to laugh about the kidnapping tells Katherine this was obviously self-defense, and orders her cuffs to be taken off. As she's being taken to the hospital, Dylan runs up to hug her.
Cut to five years later: Katherine is now an intrinsic part of the weekly poker game and all other aspects of life on Wisteria Lane. Orson and Bree are back together. Gabrielle is greeted at home by her two young daughters. And when Susan arrives home, it's not Mike who greets her with a kiss, but a man we've never seen before.