Main •
Eric Bana as Kyle Turner, a
National Park Service Investigative Services Branch (ISB) special agent at Yosemite National Park who is still grieving the loss of his young son six years prior •
Sam Neill as Paul Souter, the chief park ranger of Yosemite and Turner's mentor •
Rosemarie DeWitt as Jill Bodwin, Turner's ex-wife, a realtor who used to be an elementary school teacher •
Lily Santiago as Naya Vasquez, a rookie National Park Service ranger who moved to Yosemite from Los Angeles and is assisting Turner with the investigation •
Wilson Bethel as Shane Maguire, the wildlife management officer at Yosemite and a former
Army Ranger •
Shea Whigham as Ray Burkart (season 2) •
Moon Bloodgood as Layla Hale (season 2) • Kekoa Kekumano as Marcus Sawada (season 2)
Recurring • William Smillie as Bruce Milch, a veteran park ranger at Yosemite •
Raoul Max Trujillo as Jay Stewart, a park employee and an indigenous friend of Turner who provides insights into local symbols and heritage • Joe Holt as Lawrence Hamilton, the park superintendent, focused on public image amid the crisis •
Josh Randall as Scott Bodwin, Jill's current husband, who is a dentist •
Ezra Franky as Lucy Cook, the victim known initially as Jane Doe, with a complex backstory involving abuse and disappearance •
Nicola Correia-Damude as Esther Avalos, a law firm investigator pressuring Turner over the disappearance of Sean Sanderson, who went missing 6 years ago • Trevor Carroll as Mr. Begay •
Kelly Hu as Awapuhi (season 2) •
Myra Molloy as Addy Hale (season 2) • Matthew Keoni Sato as Kaden Burkart (season 2), Ray's son •
Robbie Magasiva as Lt. Ochi (season 2), a Hawai'i Police Lieutenant •
Branscombe Richmond as Ikua Hale (season 2) • Moronai Kanekoa as Ti Hale (season 2) •
Joe Tippett as Casper Kane (season 2) •
Luciane Buchanan as Ku'ulei Pana (season 2) ==Episodes==