Sky Metalwala was two years old when he disappeared from Bellevue, Washington, on the morning of November 6, 2011. His mother, Julia Biryukova, told police Sky woke feeling sick and that she left him asleep and strapped into his car seat inside an unlocked Acura while she and his four-year-old sister walked about a mile to get help after the car supposedly ran out of gas. She said she returned an hour to an hour and a half later to find Sky gone.

Investigators found the car operable with fuel in the tank, no gas can in the vehicle or home, and some motorists reported not seeing a child inside the parked car. Biryukova declined a polygraph and limited her communication with detectives to through an attorney; police have said they believe she knows what happened. The family had a contentious custody history, and the couple had been charged in 2009 for leaving an infant alone in a car before those charges were dismissed.

The Bellevue Police Department and the FBI have treated the matter as an open, active investigation, following thousands of hours of work and more than 2,500 tips. No trace of Sky has been found. If anyone knew Sky, his routine, or saw a small child in that area on November 6, 2011, please share what was seen or remembered.