A young FBI agent is assigned to work a murder investigation on a Sioux reservation, just because he happens to have some Native American ancestry. He's caught between two worlds: his job as an FBI investigator and a community full of people who don't quite trust him. 

Val Kilmer, Sam Shepard, and Graham Greene star in Thunderheart.

Watch the trailer: https://www.youtube.com/watch?v=dJp5pxFG6Sg