The History of the Devil: With 350 Illustrations

Cold-Case Christianity: A Homicide Detective Investigates the Claims of the Gospels

Fundamental Problems: The Method of Philosophy as a Systematic Arrangement of Knowledge

On Guard: Defending Your Faith with Reason and Precision

God: An Enquiry Into the Nature of Man's Highest Ideal and a Solution of the Problem from the Standpoint of Science

Wicca: A Guide for the Solitary Practitioner

The Foundations of Mathematics

Seeking Allah, Finding Jesus: A Devout Muslim Encounters Christianity

Illuminati: The Secret Society That Hijacked the World (The History of One of the World's Most Notorious Secret Societies)

A History of Religious Ideas, Volume 2: From Gautama Buddha to the Triumph of Christianity

Is the Bible God's Word?

The Lesser Key of Solomon

The Holy Science

Faith Is for Weak People: Responding to the Top 20 Objections to the Gospel

After Lives: A Guide to Heaven, Hell, and Purgatory

Babylon Religion: How a Babylonian Goddess Became the Virgin Mary

Answering Jihad: A Better Way Forward

No God but One: Allah or Jesus? (with Bonus Content): A Former Muslim Investigates the Evidence for Islam and Christianity

The Gnostic Bible: Revised and Expanded Edition