Terressa Vanegas was 16 when her body was found behind Dickinson High School in Dickinson, Texas, on November 3, 2006. She was discovered face-down in a puddle of water on a former soccer field after having been reported missing by her family; her brother said she was last seen at home on Halloween night.

The Galveston County Medical Examiner’s Office ruled the death a homicide.

If anyone was in the Dickinson High School area or saw Terressa between Halloween and November 3, 2006, please share what you know with investigators.