A teen girl died in a Colorado house fire. As investigators dug into the case, the mystery deepened

On a December day in 2017, Maggie Long ran home to pick up cookies for an event at her high school in rural Colorado. Her family’s home was damaged that day in a fire, and the 17-year-old’s body was found inside. Then the mystery deepened.

​ On a December day in 2017, Maggie Long ran home to pick up cookies for an event at her high school in rural Colorado. Her family’s home was damaged that day in a fire, and the 17-year-old’s body was found inside. Then the mystery deepened. Read More Breaking News, Latest News and Videos | CNN