Reza Aslan journeys to the holy city of Varanasi, India, to immerse himself in a Hindu sect known as the Aghori.

Reza Aslan travels to the big island of Hawaii to immerse himself in an apocalyptic cult run by a self-proclaimed prophet named JeZus to explore the anatomy of a doomsday cult.

Reza Aslan visits Haiti to explore the world of Vodou and the Evangelical Christian missionaries who believe it to be the work of Satan.

Reza Aslan explores the growing community of independent Scientologists who have left the Church, but still faithfully practice the religion created by L. Ron Hubbard.

Reza Aslan travels to Mexico City to learn more about a new rapidly growing religion, Santa Muerte, and whether it is a death cult for murderers and narco traffickers, satanic worship or something else altogether.

Reza heads to Jerusalem to immerse himself in the world of the Haredim and explore the tensions between this isolated group and secular Jews in Israel.