Commentator-comic Bill Maher plays devil's advocate with religion as he talks to believers about their faith. Traveling around the world, Maher examines the tenets of Christianity, Judaism and Islam and raises questions about homosexuality, proof of Christ's existence, Jewish Sabbath laws, violent Muslim extremists.

Bill Maher
as Self - Host/Narrator

Jose Luis De Jesus Miranda
as Self

Andrew Newberg
as Self

Steve Burg
as Self

Tal Bachman
as Self

Jonathan Boulden
as Self

Francis Collins
as Self

George Coyne
as Self

Benjamin Creme
as Self

Jeremiah Cummings
as Self