Robert Poletick

Selina courts voters at a book signing in Iowa; Selina and her staff hear a rumour that could impact the next election.

The Thick of It's Chris Addison directs the season premiere in which President Selina and her hapless team prep for her Joint Session speech.

Selina orders a "partial" full disclosure of all office correspondence; Selina threatens to fire a key staffer.

Mystified by Omar's disappearance, Marlo and Chris step up their efforts to locate their nemesis. Meanwhile, Carcetti sets out to establish himself as a champion for the homeless. Freamon and McNulty press for new surveillance equipment only to come up short and Pearlman discovers new clues pointing to corruption at City Hall.

As McNulty and the detail continue to stake out Marlo's crew, newly elected Mayor Carcetti is finding he is stuck between keeping his promises on education and his promises on law and order.

Carcetti maps out a damage-control scenario; McNulty asks Landsman to pull police off the homeless case; Haynes' concerns about Templeton fall on deaf ears; Dukie seeks out an old mentor for a loan.