Before her death, Tesla’s assistant revealed that on a terrifying night in January 1943, Nikola Tesla accidentally triggered a mysterious “Resonant Gate” experiment that left him shaken and desperately burning his notes, fearing the world might one day uncover the dangerous discovery that had looked back at him.

In a story that blurs the line between scientific genius and the edge of the unknown, newly uncovered testimony from Nikola Tesla’s longtime assistant, Elena Stojanović, has resurfaced and reignited one of the most enduring mysteries surrounding the legendary inventor.

Stojanović, who worked with Tesla during his final years at the New Yorker Hotel in Manhattan, reportedly shared a detailed account of a night in January 1943 — just days before Tesla’s death — that she claimed “changed everything I believed about the world, science, and what lies beyond it.

” Her confession, recorded in 1981 and sealed until after her death in 2002, has now been made public through her family archives, offering a rare look at what may have happened inside Room 3327 on the night Tesla made what he considered his most dangerous discovery.

According to the transcript, Stojanović described the evening of January 2, 1943, as unusually tense.

Tesla, then 86, frail, and increasingly reclusive, had summoned her back to the hotel late at night — something he had not done in years.

When she arrived, she found him pacing the room, a stack of handwritten notes spread across the bed, and an odd humming sound coming from a metal device connected by wires Tesla had strung haphazardly along the floor.

“He looked terrified,” she recalled.

“Tesla was never afraid of his own creations.

But that night, he was afraid — deeply.”

She described the device as a compact, box-like apparatus made of brass and steel plates, with a rotating coil that emitted a low-frequency vibration.

Tesla reportedly called it “the Resonant Gate.

” In earlier conversations, he had hinted at an idea he never published — a theory that certain frequencies could “interfere with the boundary between physical matter and the field of time.

” Stojanović admitted she had always dismissed such statements as metaphors.

But that night, she believed he meant it literally.

In her account, Tesla instructed her to stand near the doorway as he activated the machine.

The humming intensified, and a strange metallic scent filled the air.

“The room dimmed, not the lights — the air,” she said.

“It was as if the shadows grew thicker.

” She claimed the device created a distortion on the far wall, “like heat rising off pavement, but darker,” and Tesla shouted for her not to move.

Moments later, the distortion collapsed with a sharp crack, and the machine sparked violently before going silent.

Tesla unplugged it immediately, visibly shaken.

“He whispered, ‘No one must ever open that again,’” Stojanović recounted.

“I asked him what he saw, and he said, ‘Not what… who. ’”

She claimed Tesla refused to elaborate further, but spent the next two days feverishly writing and burning pages of notes.

Stojanović said she watched him destroy documents he had kept for decades, including papers related to his experiments on wireless energy, field resonance, and what he once called “the physics of the invisible.

” On January 5, she said Tesla handed her a sealed envelope containing the remaining notes from the “Resonant Gate” experiment, instructing her to “deliver it only if the world ever becomes reckless enough to repeat my mistake.

” She claimed she never opened the envelope — and after Tesla was found dead on January 7, the FBI confiscated all documents from his room, including the sealed packet she had left on his desk.

What happened to those papers remains a matter of speculation.

The FBI’s 1943 seizure of Tesla’s property is well documented, though officials have long insisted that none of his notes contained functional designs for advanced weapons or exotic physics.

Yet Stojanović’s testimony suggests that Tesla may have destroyed the most dangerous material himself — leaving only fragments that were later classified or lost.

Her confession ends on an unsettling note.

“People think Tesla feared his inventions might be stolen.

That’s not true,” she wrote.

“What he feared was that someone would figure out what he found that night — and try to finish what he refused to complete.”

She concluded with a warning: “He saw something in that distortion.

Something that looked back.”

Historians and physicists remain divided on the authenticity and interpretation of Stojanović’s account.

Some argue that her story is an embellishment shaped by decades of myth surrounding Tesla’s life.

Others contend that her consistent details, combined with records of Tesla’s final experiments involving resonance and electromagnetic fields, suggest her account may reflect at least a partial truth.

What is certain is that her testimony adds a new chapter to the enduring mystery surrounding the final days of one of history’s most enigmatic scientific minds — and raises chilling questions about what Tesla may have discovered in the quiet hours of that winter night in 1943.

Whether the “Resonant Gate” was a malfunctioning experiment, a misunderstood scientific breakthrough, or an encounter Tesla took to his grave, one fact remains: the world may never fully understand what happened in Room 3327 — or why Nikola Tesla spent his last nights trying to erase it.