Kenneth Wayne Klopfenstein, 34, disappeared from Bellevue, Washington on April 19, 1986. He was last seen in the area of his neighbor’s backyard. Kenneth is described as five feet ten inches, about 165 pounds, with brown hair, brown eyes and a small mole on his chin.

On the day he vanished he reportedly was behaving irrationally in his own backyard. Some of his personal effects — a backpack and some books — were later found abandoned in a neighbor’s yard, suggesting his departure was abrupt and unplanned. Family members said he may have been struggling with depression after a recent failed relationship. The King County Sheriff’s Office was notified on April 22, 1986 and opened an investigation; no significant leads have been reported and his whereabouts remain unknown.

Does anyone who lived in Bellevue in April 1986 remember seeing Kenneth or his belongings, or have information that could help clarify what happened?