Warning: Spoilers ahead for "The Leftovers" season three premiere.
The third and final season of "The Leftovers" kicked off on April 16 with a cold open, showing a mysterious cult of people (who were based on a real religious sect called Millerism). From there, the show killed off two of its main characters within minutes and jumped forward in time three years.
As we learned more about how Kevin Garvey and the rest of Jarden's residents are doing, you might have missed some of the smaller moments that relate back to past plots and future themes.
Keep reading for a look at the six most important details you might have missed.
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The woman we followed in the cold open was meant to represent a real religious sect called Millerites.

INSIDER spoke with executive producer and the director for this episode, Mimi Leder, who revealed that the family we saw in the cold open were meant to be Millerites.
Millerism is a religious sect that began in the 1840s in New York. A farmer named William Miller came up with a new way to interpret the Book of Revelation, and did mathematical calculations to determine when the Second Coming of Christ would occur and worthy believers would be carried into heaven.
There were a couple context clues that hinted at the people being Millerites. One was the series of dates shown on the chalkboard.

Miller's equations led to several predicted dates for the Second Coming of Christ. His first were deemed wrong because he had miscounted years, but when the final predicted date (October 22, 1844) did not end with believers being taken to heaven, the Millerites called it the Great Disappointment.
In the show, we see three dates: January 21, April 16, and August 7, 1844. The second date, April 16, was likely a nod to the premiere date of the episode.
The Great Disappointment was actually written on a chalkboard in "The Leftovers" scene.

When the woman returned to the church after her third night of waiting, there was a chalkboard in the background that had "great disappointment" and "ballocks" and "fool" written on it.
For more on Millerism and how it relates to "The Leftovers," read our full interview with Mimi Leder and Damon Lindelof.
See the rest of the story at Business Insider