A police officer chased a native teen to his death. Days later, the police force just shut down.

Braven Glenn was killed in a police car chase that resulted in a head-on collision with a train.

Mother Blossom Old Bull was raising three teenagers on the Crow Indian Reservation in Montana .

She went to the police station, only to find it had shut down without any notice.

This kicks off a yearslong search to find out what happened.