Big Sky is an American crime drama thriller television series created by David E. Kelley and based on The Highway series of books by C. J. Box. Katheryn Winnick and Kylie Bunbury star as a pair of investigators who team up to work on multiple cases in Montana. Dedee Pfeiffer also stars. Brian Geraghty, Jesse James Keitel, John Carroll Lynch, Anja Savcic, and Omar Metwally join them for the first two seasons, while Jamie-Lynn Sigler and J. Anthony Pena join them for the last two seasons. Also starring in the series are Valerie Mahaffey, Natalie Alyn Lind, Jade Pettyjohn, Ryan Phillippe and Ted Levine in the first season, Janina Gavankar and Logan Marshall-Green in the second season, and Jensen Ackles and Reba McEntire in the third season.
The series aired on ABC from November 17, 2020 to January 18, 2023. In May 2021, the series was renewed for a second season which premiered on September 30, 2021. In May 2022, the series was renewed for a third season, subtitled Deadly Trails, which premiered on September 21, 2022. In May 2023, the series was canceled after three seasons.
The series, based on C. J. Box's novel The Highway and developed by David E. Kelley, was announced as The Big Sky in January 2020 and given a straight-to-series order by ABC. The series is produced by David E. Kelley Productions, A+E Studios and 20th Television. Kelley and Ross Fineman serve as executive producers, along with Box, Matthew Gross and Paul McGuigan. On June 17, 2020, it was announced that the series would air on Tuesdays at 10:00/9:00c. On December 7, 2020, ABC gave the series a six-episode back order, bringing the total number of first-season episodes ordered to 16. On May 4, 2021, ABC renewed the series for a second season. It was also reported that Elwood Reid who was added as an executive producer for the second half of the first season took the second season from Kelley. However, Kelley is still involved with the series and remains as an executive producer. On May 13, 2022, ABC renewed the series for a third season. The subtitle for the third season is Deadly Trails. On May 12, 2023, ABC canceled the series after three seasons.
John Carroll Lynch, Dedee Pfeiffer, Ryan Phillippe, and Katheryn Winnick were the first cast additions announced through February 2020. In March 2020, Brian Geraghty, Kylie Bunbury, Natalie Alyn Lind and Jesse James Keitel were added, with Bunbury in the co-lead role. On June 24, 2020, it was announced that Jade Pettyjohn joined the cast in a starring role. On August 6, 2020, Valerie Mahaffey joined the main cast. On October 8, 2020, Brooke Smith, Jeffery Joseph, Gage Marsh, and Gabriel Jacob-Cross were cast in recurring roles. in December 2020, Camille Sullivan, Chad Willett, Patrick Gallagher, and Sharon Taylor joined the cast in recurring capacities. In January 2021, Ted Levine was cast as a new series regular while Kyle Schmid, Michelle Forbes, Britt Robertson, Michael Raymond-James, Ryan Dorsey and Omar Metwally were cast in recurring roles. On April 12, 2021, Carlos Gómez, Anja Savcic, and Zoë Noelle Baker joined the cast in recurring roles. On July 20, 2021, Metwally was promoted as a series regular for the second season. On August 17, 2021, Janina Gavankar was cast as new series regular while Savcic was promoted as a series regular and Keitel was demoted to recurring for the second season. Two days later, Jamie-Lynn Sigler, Madelyn Kientz, Troy Johnson, Lola Reid, Jeremy Ray Taylor, T.V. Carpio, and Arturo Del Puerto joined the cast in recurring roles for the second season. On August 24, 2021, Logan Marshall-Green was cast a new series regular for the second season. On August 26, 2021, Lynch confirmed that he is set to return in some capacity for the second season. On September 21, 2021, Vinny Chhibber, Romy Rosemont, Ryan O'Nan, Michael Malarkey, and David Meunier joined the cast in recurring roles for the second season. in February 2022, Constance Zimmer and Bernard White were cast in recurring roles for the second season. On May 12, 2022, it was reported that Jensen Ackles is set to guest star for the second-season finale. The next day, it was announced that Ackles and Sigler had been promoted to series regulars for the third season. A few days later, Reba McEntire was cast a series regular for the third season. On July 18, 2022, it was announced that J. Anthony Pena was promoted to a series regular while Luke Mitchell, Seth Gabel, Henry Ian Cusick, Anirudh Pisharody, and Madalyn Horcher were cast in recurring roles for the third season. On August 5, 2022, Rosanna Arquette joined the cast in a recurring role for the third season. The following week, Rex Linn was cast in an undisclosed capacity for the third season. On September 9, 2022, Angelique Cabral joined the cast in an undisclosed capacity for the third season. A few days later, it was announced that Metwally won't be a series regular for the third season due to a scheduling conflict, but may return for a few episodes later in the season. One week later, it was confirmed that Jesse James Keitel, Anja Savcic, Janina Gavankar, Logan Marshall-Green and Vinny Chhibber won't return for the third season. On October 5, 2022, it was announced that Lyle Lovett and Darius Rucker are set to guest star on an episode for the third season.
Filming on the series' first season began on August 27, 2020, and concluded on April 24, 2021, in Vancouver, with the outdoor, mountainous wilderness around Squamish and Fraser Valley, plus various other locations in British Columbia with aerial shots of Helena, Montana's capital. Filming was originally set to take place in Albuquerque, New Mexico, and Las Vegas, Nevada, but the series was moved to Vancouver in July 2020, due to the COVID-19 pandemic in the United States. The series was one of many American television productions in Vancouver that briefly halted filming in late September 2020, due to delays in receiving cast and crew COVID-19 test results. On August 12, 2021, it was reported that the second season is scheduled to film in Rio Rancho, New Mexico from August 2021 through April 2022.
On September 9, 2020, ABC released the first teaser for the series.
Big Sky aired on ABC from November 17, 2020 to January 18, 2023. Big Sky airs in Canada on CTV, simulcast with ABC in the United States. In India, the series was streamed on Disney+ Hotstar along with ABC. Internationally, the series premiered on Disney+ under the dedicated streaming hub Star as an original series, on February 23, 2021, and in Latin America the series premiered on August 31, 2021, on Star+.
The second season premiered on September 30, 2021, on ABC. The third season premiered on September 21, 2022, on ABC.
For the series, review aggregator Rotten Tomatoes reported an approval rating of 61% based on 28 critic reviews, with an average rating of 6/10. The website's critics consensus reads, "Big Sky shaky setup doesn't do it many favors, but viewers who can push through may find its fast-paced, twisty mystery compelling enough." Metacritic gave the series a weighted average score of 54 out of 100 based on 18 critic reviews, indicating "mixed or average reviews".
After the pilot aired, members of the Rocky Mountain Tribal Leaders Council, Coushatta Tribe of Louisiana, Global Indigenous Council, Great Plains Tribal Chairmen's Association, and the Union of British Columbia Indian Chiefs (UBCIC), among others, addressed a letter to ABC Entertainment President Karey Burke and series creator David E. Kelley, accusing the show of "at best, cultural insensitivity, and at worst, appropriation" due to being set in an area with a disproportionately high rate of Murdered and Missing Indigenous Women & Girls (MMIWG), yet not having any tribal representation in the show."