In today's episode, we're traveling back to 1977, when a radio telescope in Ohio captured a mysterious signal that has captivated astronomers and skywatchers for decades. Known as the Wow! Signal, it was a brief burst of radio waves from the cosmos that still remains unexplained to this day.

In today's episode, we’re traveling back to 2003, when federal prosecutor Jonathan Luna left his Baltimore office one night. His body was found the next morning in Lancaster County, Pennsylvania. Investigators, coroners, and federal authorities have spent years examining his final journey, only to arrive at conflicting conclusions. His death is one of the most baffling cases in recent American true-crime history.

In today's episode, we're traveling back to the year 2000 to delve into the tragic murder of a young woman named Erin Taylor. She was more than a name in a case file — she was someone who was deeply loved, and her absence left a space that cannot be filled. To this day, her death remains one of Marquette, Michigan’s most haunting mysteries — a wound that never fully healed and a story that refuses to fade with time.

In today's episode, we're traveling back to 2006, when the body of Rey Rivera was found in a locked conference room of Baltimore's Belvedere Hotel. It apparently crashed through the roof from a height of 200 feet in a manner that baffled investigators. A cryptic note taped behind his computer, a panicked phone call, and a trail of unanswered questions turned his death into one of the most perplexing cases of the modern era.

In today's episode, we’re traveling back to 1961, when a young mother named Joan Risch vanished without a trace from her Massachusetts home. The only clues left behind were a kitchen smeared with blood, a phone ripped from the wall, and a trail of contradictions that has led investigators down decades of dead ends. More than sixty years later, Joan’s case remains one of New England’s most haunting mysteries.

In today's episode, we're looking back at the Hinterkaifeck murders of 1922. It's one of Germany's most disturbing unsolved crimes, where six people were brutally killed on an isolated Bavarian farmstead. The case is particularly chilling — not just for its violence, but for the eerie events that preceded and followed the murders.

In today's episode, we’re looking back at the Carroll A. Deering mystery, which represents one of maritime history's most baffling disappearances. It centers on a massive American commercial schooner that was discovered abandoned off North Carolina's coast in 1921. What makes this a story about a "ghost ship" is that all members of the crew had somehow vanished without a trace.

In today's episode, we’re traveling to Tokyo to delve into a crime known as the Setagaya Family Murder, one of Japan's most perplexing unsolved cases. What makes it stand out is that, instead of fleeing after committing a horrific mass murder, the killer remained in the victims' home for several hours, displaying behavior that can only be described as bizarre. More than two decades later, this case continues to haunt investigators.

In today's episode, we're traveling back to 1981, outside the French town of Trans-en-Provence, where an unidentified flying object reportedly left physical evidence in the form of burnt residue — along with other physical traces — in a farmer's field. The incredible UFO event was later described in a Popular Mechanics article as "perhaps the most completely and carefully documented sighting of all time."

In today's episode, we’re looking back at the tragic story of a 4-year-old boy — previously known as the "Boy in the Box" or "America's Unknown Child" — whose body was found in Philadelphia in 1957. His identity remained unknown for 65 years, until police detectives finally identified him through the use of DNA and genealogical databases. Despite multiple leads and several theories, the boy's killer still remains a mystery.