Do you ever get completely lost in the wormhole that is known as Wikipedia? Researching all kinds of topics until the wee hours of the morning?

Well, there are plenty of the creepy variety that will occupy your time and keep you up at night because they’re so damn creepy.

Here are some terrifying Wikipedia pages based on true-life cults that will really give you the heebie-jeebies.

1. The Holy Rollers

Photo Credit: Public Domain

Edmund Creffield started a cult known as The Holy Rollers in Corvallis, Oregon in 1903. The extremist religious group believed Creffield was Jesus Christ (a common theme in cults), and he attracted many female followers. Creffield had many run-ins with the law and was murdered in 1906 by a man whose sister fell under Creffield’s spell.

2. Adolfo Constanzo

Photo Credit: Wikipedia

Constanzo led a Satanic cult in Mexico and he believed the power of Satan protected him. He was a drug dealer who sacrificed animals and eventually humans. Constanzo and his followers killed victims on a remote ranch in Mexico not far from the Texas border. The high profile murder of a college student named Mark Kilroy attracted a lot of media attention, which eventually led to his downfall in 1989. Police surrounded an apartment where he was staying in Mexico City and Constanzo ordered one of his followers to shoot him.