"Donnie or Marie" is the twenty-fifth episode of the American television drama series The Killing, and the twelfth of its second season, which aired on the AMC channel in the United States on June 10, 2012.
In the episode, the detectives look to Richmond's campaign staff for suspects, while he gets ready for the election; and Mitch and Stan Larsen try to get their family back to normal.
Picking up where the previous episode left off, Linden (Mireille Enos) and Holder (Joel Kinnaman) peg Gwen and Jamie as prime suspects—the only ones in Richmond's campaign with enough power to broker a deal between the Indians and Michael Ames.
Linden insists they are fighting a common enemy, noting that Richmond's camp planted the Indian bones at Adams' waterfront construction site.
At City Hall, Linden asks a Richmond campaign worker (Sachin Sahel) to identify the owner of the blood-stained keycard.
At the casino, Holder and Linden see Chief Jackson (Claudia Ferri) and Roberta Drays (Patti Kim) arguing and deduce that they are romantically involved.
Linden sees a photo from the casino's grand opening and points out Gwen (Kristin Lehman) and Senator Eaton (Alan Dale) standing alongside Chief Jackson.
Councilwoman Ruth Yitanes (Lee Garlington) tells the detectives that Gwen canceled their dinner plans on the night of Rosie's murder.
They question Gwen, who admits she recently lost her keycard but maintains she was at a Tacoma bed and breakfast on the night of Rosie's murder.
Later at Holder's apartment, Linden studies the grand opening photo and notices Jackson's former head of security had a broken arm.
The detectives watch the missing security footage, which reveals the campaign car pulling up at 12:58 a.m. Holder plays a second disc, labeled "10th floor elevator."
But that noir tone has never changed, The characters have remained true to themselves flaws and all, and the case, while at times long winded, in these last few episodes has felt like it's moved somewhere, giving us something to grasp onto and feel as if the answers are within our reach.