Dark Secrets of the New Age: Satan’s Plan for a One World Religion by Texe Marrs (1987) is a conspiracist exposé that argues the New Age movement is a coordinated, Satanic effort to infiltrate society, destroy Christianity, and establish a global government. Marrs claims the movement is actively working to install a "New Age Messiah" (identified as the Antichrist) to lead this new world order.
The book is considered a foundational text in Christian apocalyptic conspiracy literature regarding the New Age movement, focusing on the "mark of the beast" and spiritual warfare.