Father Crowley, priest at the local Catholic church, and John Rubinstein appearing as Principal Hobson, headmaster at Juanita and M.J.'s school. Part of Lynette's storyline were Helena Mattsson in the role of Irina Korsakov, Preston's Russian fiancée, and Brent Kinsman, Shane Kinsman and Zane Huett returning as the younger versions of Preston, Porter and Parker Scavo in flashbacks. Part of Katherine's storyline were Lyndsy Fonseca who returned for one episode in the role of Dylan Mayfair, Katherine's daughter, and Julie Benz portraying Robin Gallagher, a stripper and Katherine's new love interest. Part of the main mystery arc were John Barrowman appearing as Patrick Logan, an eco-terrorist and Danny's biological father, Julie McNiven playing Emily Portsmith, a barrista at a local cafe and acquaintance of Nick, and Ellen Crawford portraying Iris Beckley, a neighbor of Angie's mother that informs Patrick of the Bolens' whereabouts. Orson Bean was introduced in the role of Roy Bender, Mrs. McCluskey's new boyfriend. Josh Zuckerman appeared as Eddie Orlofsky, the infamous Fairview strangler. Maria Cominis played Mona Clarke, a Wisteria Lane resident who blackmails Angie when she discovers her secret. Mindy Sterling portrayed Mitzi Kinsky, a new neighbor in Wisteria Lane. Furthermore, Mark Moses returned in the season finale as Paul Young, Mary Alice's widower. Episodes International ratings Detailed international schedules and ratings United States (ABC) Republic of Ireland (RTÉ 2) Desperate Housewives airs Tuesdays at 9:55pm on RTÉ 2 in Ireland. All ratings below are supplied from the RTÉ Guide TV guide. The ratings are supplied by TAM Ireland/Nielsen TAM. Season 6 averaged 451,000 viewers when the average was calculated after the season finale. India (Star World) United Kingdom (Channel 4) New Zealand (TV2) All sourced from: Throng Ratings. The season averaged 431,975 viewers. For episode 134, original airing only / original including prime-time repeat special before beginning of new season on January 7, 2011. DVD release References External links 2009 American television seasons 2010 American television seasons Eco-terrorism in fiction