The JFK Assassination 1963 · 5 Sep 2026 · 15 min

The Tape That Changed the Official Record: Acoustics and the Second Gunman

A forgotten Dallas Police Dictabelt recording surfaced in 1978 and cracked open the Warren Commission's single-shooter verdict — but what it actually proved is still fiercely contested. This episode follows the acoustic evidence, the grassy knoll witnesses, and the House Select Committee's explosive conclusion of probable conspiracy.

The JFK Assassination 1963
Now Playing
The Tape That Changed the Official Record: Acoustics and the Second Gunman

Audio is available on Spreaker — see link below.

What's covered

The Recording Nobody Looked For

There was a Dictabelt recording sitting in a locked cabinet at Dallas Police headquarters for fifteen years. Nobody was looking for it.

Listen now →

Six Seconds That Couldn't Be Contained

Start with what we know. November twenty-second, nineteen sixty-three.

Listen now →

How Oswald Got There

To understand what the tape eventually challenged, it helps to understand what the Commission did establish. Oswald's presence at the Book Depository wasn't the result of careful planning, as far as investigators could determine.

Listen now →

The Warren Commission's Core Problem

The Commission's timeline was tight. The Zapruder film, the home movie shot by dressmaker Abraham Zapruder from a concrete pedestal in Dealey Plaza, captured the assassination in real time.

Listen now →

The Grassy Knoll and What Witnesses Said

From the moment the shots were fired, witnesses in Dealey Plaza weren't pointing only toward the Book Depository. A significant number of people ran toward the grassy knoll, a sloped embankment to the right and ahead of the presidential limousine, separated from the road by a wooden fence at the top.

Listen now →

The Dictabelt

Dallas police in nineteen sixty-three recorded their radio dispatch communications on Dictabelts, grooved plastic discs that captured audio in real time. One channel was left open during the motorcade, a motorcycle officer's radio stuck in transmit mode.

Listen now →

What the Committee Did With It

The House Select Committee on Assassinations had been running for two years when the acoustic findings came in. They were already skeptical of the Warren Commission's single-shooter conclusion.

Listen now →

The Dispute That Followed

The acoustic analysis did not settle the question. It ignited a new round of it.

Listen now →

What Circumstantial Evidence Can and Can't Do

Step back from the tape for a moment. The case linking Oswald to the shooting is circumstantial in a specific sense.

Listen now →

The Files That Stay Sealed

The document releases haven't resolved things either. Congress mandated in nineteen ninety-two that nearly all assassination-related records be released by two thousand seventeen.

Listen now →

Sixty Years and the Dictabelt's Legacy

Here's what the Dictabelt episode actually tells us. The evidentiary record of the Kennedy assassination is not static.

Listen now →

Chapter summary auto-generated from the verified script. Listen to the full episode for the complete content.

More episodes

From The JFK Assassination 1963