Last week, Dallas mourned the death of 4-year-old Cash Gernon, who was snatched from the crib he shared with his twin brother early on the morning of May 15. Shortly after the boy was found dead in the street, the suspect allegedly returned to the bedroom to take Cash's twin. Surveillance camera footage obtained exclusively by the Daily Mailcaptured 18-year-old Darriynn Brown, hovering over the boys' crib for around a minute. Then, Brown picked up Cash and exited the room. Around two hours later, Cash’s body was discovered on the street in Dallas’ Mountain Creek neighborhood. He was shirtless, barefoot and lifeless. Police say the boy had been stabbed with an “edged weapon.”