On July 23 , 1991 , just a few weeks short of their first wedding anniversary , the couple took Cynthia 's two sons on a day trip to Lake Sammamish , the same lake where Ted Bundy had abducted two young women years earlier .
On July 23 , 1991 , they took Cynthia 's two sons on a day trip to a big lake called Lake Sammamish .