Trackdown: Help find Ramon Zapata's killer

Farmers Branch police are looking for capital murder suspect Tristan Calvillo, who they say killed an innocent person during a home invasion robbery in October of last year.

Trackdown: Help find Quentin Gellington's killers

In this week’s Trackdown, Dallas PD detectives are looking for two men who shot and killed Good Samaritan Quentin Gellington when he stepped in to stop a robbery, along with the driver of the car that drove over him when he fell.

Trackdown: Help find Omar Hernandez

Police say Omar Hernandez shot a man and a woman, chased them down, before shooting the woman again multiple times after she crashed her vehicle trying to get away from the violence.