This is the first in a series.

It was Memorial Day weekend 1969. Students were home from college, and the Jersey Shore was preparing for the biggest summer season since the March 1962 nor’easter. When that weekend was over, many things would never be the same.

New terms like “serial killer” and “cold case” would be used to describe what had taken place. One of the first indications that something was wrong appeared in the morning edition of the June 2 Harrisburg, Pa. Patriot News.

“Police in 13 states last night were searching for a 19- year-old West Shore girl, and a companion who disappeared…