"72 Hours" is the twenty-third episode of the American television drama series The Killing, and the tenth of its second season, which aired on the AMC channel in the United States on May 27, 2012.
In the episode, Sarah Linden (Mireille Enos) finds herself in a psychiatric ward, while Stephen Holder (Joel Kinnaman) continues the investigation.
In the waiting room, Lt. Carlson (Mark Moses) tells Holder that Linden attacked a casino worker while trying to kill herself.
Holder says the tribe is hiding evidence and informs him that the Larsen case files disappeared on the way to county police.
At the Larsen home, Stan apologizes to Terry (Jamie Anne Allman), who says the case may never be solved, that he is angry because he cannot let go, and suggests he fix what he can.
Stan later approaches Amber (Ashley Johnson) and Bennet (Brandon Jay McLaren) Ahmed at their front door.
Holder notices a Mayor Adams billboard at the waterfront construction site and notes Michael Ames is the project manager.
He calls police technician Ray (Randall Edwards) at the station, who researches and tells him that a man was arrested and then released after breaking into the site on the night of Rosie's murder.
At a Seattle All Stars basketball event, Jamie Wright (Eric Ladin) argues they should be courting votes they do not already have, but Gwen Eaton (Kristin Lehman) reassures Richmond to campaign for what feels genuine.
He then finds Joseph Nowak (Brad Kelly) at a lumber yard and chases him down, demanding to know about the waterfront activity that night.
Roberta Drays (Patti Kim) monitors a construction crew resuming work on the tenth-floor room.
Club's Brandon Nowalk rated this episode a B−, saying "'72 Hours' feels caught between what The Killing was and what it has recently become, which is admittedly a false dichotomy.
He added, "It could have worked out, but besides the revelation that Linden was engaged to her old psychiatrist, which raises a few questions that have nothing to do with the main storyline, it gives us nothing new besides a connection between several of the key suspects, which could have been integrated into just about any episode of the series.