Longmire is an American neo-Western crime drama television series that premiered on June 3, 2012, on the A&E network, developed by John Coveny and Hunt Baldwin.

Sheriff Longmire's longtime friend Henry Standing Bear (Lou Diamond Phillips), a Cheyenne, provides insight to and sometimes aids in dealing with tribal police.

As the series progresses, the friends deal with gambling at a casino on the reservation, competing jurisdictional authority for protecting people and prosecuting crimes, and other issues of contemporary Native American life.

While preparing to run for re-election, Walt has delegated most police duties to deputies Branch Connally (Bailey Chase) and "The Ferg" (Adam Bartley).

Victoria "Vic" Moretti (Katee Sackhoff), a transplanted Philadelphia homicide detective, arrived in Wyoming six months prior and works as one of Walt's deputies.

Hector (Jeffrey De Serrano), a Cheyenne mercenary believed to have assaulted Gorski, is protected by Walt.

In prison, Henry is abused by other Native Americans, led by former Cheyenne reservation police chief Malachi Strand (Graham Greene).

Malachi is also released and begins working as security for Jacob Nighthorse (A Martinez), a prominent Cheyenne businessman and developer.

He begins to believe that Branch is obsessed by his ideas about Ridges and suspends him temporarily, putting him in the care of his father Barlow (Gerald McRaney).

Walt, Vic, and Ferg set out to search for Branch, after finding a disturbing typewritten note on his home computer.

The department investigates the rape of a Cheyenne girl named Gabriella (Julia Jones) by a group of oil rig workers, but is unable to do anything.

Mathias (Zahn McClarnon), the chief of police on the Cheyenne Reservation, figures out that Henry has taken over Hector's duties as vigilante and uses that to his advantage.

Uncovering who is selling heroin on the reservation leads Walt to arrest their local enforcer Eddie Harp (Dan Donohue).

Vic learns she is pregnant, but is unsure if the father is her ex-boyfriend Eamonn (Josh Cooke) or Travis (Derek Phillips), Branch's childhood best friend with whom she had a drunken one-night stand.

The death of Irish Mob enforcer Eddie Harp is revealed to have been staged, and he is discovered back selling heroin on the reservation.

Malachi and his men face a final showdown with Walt, Vic, Ferg, and the recently reinstated Zach Heflin, joined by Mathias' Cheyenne tribal police, ending with Walt killing Malachi and Henry killing Darius Burns (Joseph Daniel Havenstar), his second in command.

Walt leaves searching for the buried treasure that Lucian had convinced him that he had found, while Henry takes over Jacob's casino.

The Prescott Fire Department's Granite Mountain Hotshots assisted in preventing the destruction of the area around where Walt's house is filmed.

Filming of the interiors took place in New Mexico at Garson Studios, on the campus of Santa Fe University of Art and Design.

[31] On August 28, 2014, A&E announced that Longmire was cancelled after completing its third season, despite consistently strong viewership that made it "the most-watched original series in A&E history, packing almost 6 million viewers" per episode.

[32] Three months later, Netflix confirmed that it had picked up the series (based, in contrast to A&E, on its strong appeal to a specific segment of the audience[32]) and would film additional episodes.

The three-disc set included an extended directors' cut version of the seventh episode, "Sound and Fury", as well as the season finale, "Bad Medicine".

[55] In its first season, Nancy DeWolf Smith of The Wall Street Journal called the series "the best of two worlds: a modern crime drama with dry wit and sometimes heart-wrenching emotion that's also got a glorious setting under the big sky of Wyoming [sic: Longmire was filmed in New Mexico]."

"[62] Newsday's Verne Gay stated: "Longmire arrives as silently as a dust devil kicked up by a high wind on the Wyoming plains.

"[63] Alan Sepinwall of HitFix said of season one, "there's a sense of place to the show that makes it feel unlike every other cop show on television", and he would "like to see the mysteries grow more engaging as the series moves along, but Longmire at least starts with a good foundation in Walt, his sidekicks, and the wide, open spaces they travel.

"[64] The San Francisco Chronicle's David Wiegand was critical, writing that the series "has the look and feel of a show cooked up by a bunch of bored TV industry types while they were waiting for the valet to bring their car to them at the Beverly Hills Chuck E.

"[65] Three years later, after viewing the first three episodes of season four, Brian Tallerico wrote on the Roger Ebert site, "It sometimes sounds like faint praise to describe a series like you would a reliable car, but Longmire is just a sturdy show.

"[66] At the same point in the series, Mike Hale of The New York Times also filed a favorable review, with particular praise for actor Robert Taylor, described as a "modern-day Gary Cooper or Joel McCrea".

[68] In 2013, the pilot episode of Longmire, whose teleplay was written by Hunt Baldwin and John Coveny, was nominated for an Edgar Award by the Mystery Writers of America.

[70] Also in 2013, the series won the National Cowboy & Western Heritage Museum's Bronze Wrangler for Fictional Television Drama.