Eight-year-old David William Adams disappeared on May 3, 1968, while walking home from a friend’s house in Issaquah, Washington. A third-grade student at Clark Elementary, he lived on Southeast Tiger Mountain Road and took a familiar shortcut trail after his mother called him for dinner. He never reached home. David was last seen wearing a green and brown plaid shirt, jeans, and high-top shoes.

More than 1,000 people searched the rugged terrain of Tiger Mountain, including dogs, but no trace was found. Early theories included an accidental fall into an old mine shaft or a cougar attack; investigators later shifted their focus to abduction. That same night two witnesses later said they saw a small boy matching David’s description walking along the Enumclaw-Auburn Highway.

In 2009 the King County Sheriff’s Office cold case unit reopened the file and focused on a former neighbor who was 20 in 1968 and thought to be the last person seen with David. Tracker dogs reportedly led to that man’s home during the original search; he was described as evasive, had no solid alibi, and failed a polygraph, but has never been charged and maintains his innocence. The case remains Washington’s oldest unsolved child abduction.

If anyone knew David, his family, or that neighborhood in 1968, can you share information that might still help the investigation?