We got a glimpse of the upcoming fourth season of Longmire earlier this month and now Netflix has dropped the official trailer.

Based on the novels by Craig Johnson, the fourth season centers on Walt Longmire as he succumbs to his darker impulses after finding out who was behind the murder of his wife, and takes off in pursuit of the killer.

The 10-episode fourth season stars Taylor, along with Katee Sackhoff, Lou Diamond Phillips, Bailey Chase, Cassidy Freeman and Adam Bartley. Gerald McRaney and Ally Walker guest star. Longmire is produced by The Shephard/Robin Company in association with Warner Horizon Television. Hunt Baldwin, John Coveny, Greer Shephard and Michael M. Robin serve as executive producers. Season 4 premieres September 10 on Netflix. Check out the trailer above.