Trackdown: Help find Joaquin Tutton's killer Trackdown: Help find Joaquin Tutton’s killer In this week’s Trackdown, Dallas homicide detectives need help finding a man shot in January outside of a Pleasant Grove convenience store. DALLAS - In this week’s Trackdown, Dallas homicide detectives need help finding a man shot in January outside of a Pleasant Grove convenience store. The 25-year-old man struggled with his injuries until last month. Police say the father of a 1-year-old daughter and another child on the way was in the wrong place. The moment when bullets began spraying on January 13 in broad daylight outside a Pleasant Grove convenience store was caught on tape, but it did not capture who pulled the trigger.