When news broke of ex-Scientologist and actress Leah Remini expanding on her A&E project Leah Remini: Scientology and the Aftermath to explore other “ cult-like ” religions, fans couldn’t wait to see what she had in store.

The network recently announced Leah Remini would be speaking in depth about Jehovah’s Witnesses and interviewing many of the religion's former followers, during a two-hour special set to precede the premiere of the third season of Scientology and the Aftermath.

“I thought Jehovah’s Witnesses were just nice people knocking on doors,” she teases in a trailer. “We have received many letters [saying], ‘Please look into the Jehovah’s Witnesses.’” Her producers seem to agree their show has a responsibility to offer insight and support to people who feel like they’ve been victimized by the religion — “it’s the same formula: mind control,” says one about the similarities between Jehovah’s Witnesses and Scientology. Another adds, “We owe the people who have asked for our help to actually do something.”

So, is Jehovah’s Witnesses a cult? What do they believe in?

According to their official website, the group insists it is “far from being a dangerous cult.”

Jehovah’s Witnesses, which boast 8.3 million followers and nearly 120,000 congregations, are mainly known to the mainstream for their door-to-door attempts at evangelizing and converting non-believers.

Others associate the faith with their lack of parties and celebrations. Jehovah’s Witnesses don’t observe national holidays, Christian holidays based around Jesus, or even birthdays. They also don't pledge allegiance to the flag and look down on celebrations of "apostasy," i.e., elevating worldly occurrences to the same level as God.

Many others note their controversial views about medical help, for example how they “don’t accept blood transfusions because the Bible forbids taking in blood to sustain the body” — even when the situation is life or death — a matter that recently caused the group to be banned as an extremist organization in Russia. They also don't eat food with blood for this reason, and many devout Jehovah's Witnesses are consequently vegetarian.

But there’s more to this religious group that branched off from orthodox Christianity in the late 1800s. For one, it came out of the Bible Student movement, when founder Charles Taze Russell began to dispute some of Christianity’s traditional views and published a magazine called Zion’s Watch Tower and Herald of Christ’s Presence to flesh out his concepts. In fact, before settling on a name taken from the Tetragrammaton (YHWH/JHVH), the group was originally called the Watch Tower Society after Charles’ publication.

Today, Jehovah’s Witnesses use a Bible different from other Christians called the New World Translation and believe, at the core of their faith, that Jesus was created by God and is not equal or coexistent with him. Therefore they neither worship Jesus, the Trinity, or the Holy Spirit. They also hold a central tenant of the 144,000 anointed, meaning that there are only that many spots (to account for all of history!) in heaven while the remaining devout would live out eternity on Earth after Armageddon. However, that Earth would resemble a restoration of the Garden of Eden.