The Tulsa World spent a year producing a six-part narrative on what remains perhaps the state's most infamous cold case: the unsolved murders of three girls - Lori Farmer, Denise Milner and Michele Guse - at a Girl Scout camp near Locust Grove 40 years ago. After an intense manhunt, Gene Leroy Hart was arrested and charged with the crimes, but was ultimately acquitted after a sensational trial. The series examines the details of what happened and the lingering effects on those who survived.

"I was expecting something civilized, I guess," Bettye Milner said. "I thought it would be about facts. It was like watching a movie, like everybody was performing. It was like the one who gave the best performance was the winner."

Girl Scout murders: A look at evidence used against Gene Leroy Hart at trial

Audio version: Girl Scout murders 40 years later Chapter 3

"None of us knew whether he did it or didn't. ... We were shocked that they didn't have any more (evidence) than what they had," one juror said a year after Gene Leroy Hart was acquitted. Hart died two months after the verdict, maintaining to the end his innocence in the Girl Scout murders.

Chapter 1 ICYMI: Tulsans react to the stunning news that three area girls were murdered at a Girl Scout camp near Locust Grove.

Audio version: Girl Scout murders 40 years later Chapter 4

At the time a 7-year-old Girl Scout, the woman behind campscottmurders.com said the murders shook everyone, adults and children alike. "We were 30 miles away, but it felt pretty much next door," she said. "At 7, it was like the boogie man was right outside — like the boogie man was going after Girl Scouts."

Click here to read the full series

Audio version: Girl Scout Murders 40 years later Chapter 6