A new podcast is exploring the unsolved cold cases surrounding two unique murders — one of which took place in Ravensburg State Park in 1981.

The murders of 30-year-old Wayne Rifendifer in 1981 and 22-year-old Marty Shook in 1982 were featured in the national true crime audio podcast series, APB Cold Case.

According to a release from APB Cold Case, “Wayne Rifendifer’s naked body was discovered near Ravensburg State Park in Pennsylvania on Aug. 19, 1981. Marty Shook’s body was found on June 14, 1982 in Daniel’s Canyon, Utah. He was also naked. Both men had been shot in the head and had their genitals removed. The investigations continued in separate jurisdictions for several months until they were linked by a ballistics examination which showed that both men had been shot by the same gun.”

In the audio podcast titled, “The I-80 Hitchhiker Murders — Who Shot Wayne Rifendifer and Marty Shook?”

Host Mark Sprawn — a retired police chief from Upstate New York — explores the circumstances of the investigations with Corporal Chad Kramer of the Pennsylvania State Police and retired Detective Todd Park of Utah.

One of the most interesting components of the case revealed to APB Cold Case is the timeline of events.

“In the early days of the Pennsylvania investigation, Rifendifer’s remains were unidentified — he was a John Doe. But fingerprints identified him to authorities on Aug. 27, 1981, about one week after his body was found. But before police could notify the family, an anonymous call comes in to the Pennsylvania State Police — a man claiming to have seen Rifendifer and who discloses that he had picked up Rifendifer, seen his social security number and a notebook containing information about Rifendifer’s family,” the release said.

Detective Park tells APB Cold Case, “My thoughts are that this is the killer.”

The podcast also features an interview with Rifendifer’s sister, Donna Engwer, who reminisces about her memories of her brother.

Engwer told APB Cold Case, “Looking back on my childhood — any fond memories I have include Wayne and the things we shared together… when I got the news that he had been murdered in 1981 — it shook me to my core. The fact that the individual that did these things to Wayne is still out in the world terrifies and angers me beyond words.”

“Perhaps one of our listeners holds a piece of the puzzle that will help investigators crack these 42-year-old cold cases,” the release said.

Visit APBColdCase.com for details, podcast, photographs and show notes. The podcast is available in Apple Podcasts, Spotify, Pandora and other major podcast platforms.