Justice Unraveled: How flawed forensics will impact high-profile cases

AUSTIN (KXAN) -- By the evening of Sept. 9, 1998, Louis Castro Perez’s feet were raw from wandering barefoot down South Austin streets. He was scratched, bleeding and disheveled, and he needed a place to sleep.
Perez, 36 at the time, was in shock. He’d just spent a leisurely day with a new acquaintance, a California drug dealer. The pair went to Zilker Park. They watched girls play volleyball in the sun. They snorted cocaine. They drank into the late afternoon.
Then Perez returned to