It’s kill or be killed.

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The Kevin Costner drama series “Yellowstone” is coming back for a third season this summer and things are really heating up.

The Dutton family’s legacy is on the line when a developer, played by “Lost” star Josh Holloway, comes to town to build a new airport right in Yellowstone.

As the drama ramps up, things threaten to turn violent and alliances are tested.

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Along with Holloway, Josh Brolin’s daughter Eden Brolin and the late Michael Landon’s daughter Jennifer Landon are both joining the cast of the new season.

“Yellowstone” season 3 premieres June 21.