just south is the small community of norton shores.each towns on the sunset coast of lake michigan. >> i describe muskegon as sort of a microcosm of the state of michigan. we have our urban areas, our suburban areas, and then the eastern part and northern part of our county is more rural. >> norton shores is a nice community on the southern edge of our county. >> it's one of the most beautiful areas of west michigan because it's right near lake michigan. so that's the big draw, is our lakeshore just absolutely gorgeous. >> i have a lot of pride of coming from muskegon county. i think it's just a really good place to live in and grow up in. >> but a series of apparently unconnected crimes began to sow fear into this quiet community. it all begins in the final hour of an april night, when a young woman named jessica heeringa simply vanished. swallowed up, or so it seemed, in a mystery as vast and deep as the big lake itself. >> it's april 26th, 2013, in norton shores, michigan, at this exxon station on east sternberg road. 25-year-old je