An ABC News yearlong investigation into the 2x2 Church, a Christian sect so secretive most people have never heard of it, has uncovered allegations of widespread child sexual abuse and subsequent coverups.

During the investigation, ABC News spoke with dozens of alleged victims of child sexual abuse across more than 30 states.

As part of the ongoing investigation by law enforcement, Raymond Zwiefelhofer was convicted of 10 counts of possessing child sexual abuse material and was sentenced to 120 years in prison last month.