Deep Lore returns with three unsettling unsolved mysteries connected by anonymous threats, hidden identities, and unanswered questions.
In 1960s Tokyo, ordinary objects became instruments of terror when a mysterious figure known as Soka Jiro was linked to homemade bombs, threatening letters, a shooting near Ueno Park, and a subway explosion on the Ginza Line. Despite fingerprints, handwriting samples, and one of Japan’s largest investigations, the person behind the name was never identified.
In Circleville, Ohio, a small town was torn apart by anonymous letters accusing residents of secrets, affairs, and corruption. What began as disturbing mail escalated into death, paranoia, and a roadside booby trap involving a loaded gun. Even after a man was sent to prison, the letters continued.
And in rural Missouri, Marc Randall Fullerton vanished under deeply suspicious circumstances. His girlfriend claimed he walked away from a house while sick, barefoot, and wearing only black shorts. But Marc left behind his truck, wallet, phone, glasses, dentures, and a broken cross necklace his family says he never removed.
Three cases. Three mysteries. No clear answers.
Who was Soka Jiro?
Who wrote the Circleville letters?
And what really happened to Marc Fullerton?
This episode of Deep Lore explores the fear of being watched, the power of anonymous threats, and the quiet horror of cases where the truth may have died with the people who knew it.
Cases covered:
Soka Jiro / Kusaka Jiro bombings
The Circleville Letters mystery
The disappearance of Marc Randall Fullerton
Deep Lore covers true crime, unsolved mysteries, strange disappearances, historical crimes, and unsettling stories from the darker edges of real life.