The discovery of the Mary Celeste ship, abandoned, with no crew on it, portholes open, missing goods and with no sign of violence, raises the mystery of his story. A few theories try to explain it but they are controversial.
One theory sustains the killing of the captain Benjamin Briggs by the crew and its escape on lifeboats with the missing goods, barrels of alcohol. Another theory states that the ship that found the missing boat killed the crew in order to get the reward for finding the ship.
The lecture contrasts both of the theories above explained in two points.
Firstly, captain Benjamin Briggs and his crew had a very good reputation and it’s hard to believe that such a mutiny might have happened.
Secondly, the captain of the ship who found the Mary Celeste was a great friend of Benjamin Brigg and there’s no possible reason why he should have killed him and his crew just for money.
Finally, the lecture introduces an alternative theory that might explain what really happened.
This theory has scientific bases, so it’s pretty believable; it theorizes that the ship was about to explode because of the licking alcohol from the barrels it was carrying and since the crew was inexpert on that issue, they decided to leave the boat and afterwards died by drowning or starvation