The Christian author whose book "You Can Lead an Atheist to Evidence but You Can't Make Him Think" bumped atheist Richard Dawkins' "The God Delusion" on Amazon.com's best-seller list says he's uncovered a conspiracy to attack his work.

Ray Comfort, who works with Living Waters ministry and has argued against atheism at Yale University, debated the issue on ABC's Nightline and has authored some 60 other books, including "God Doesn’t Believe in Atheists," "How to Know God Exists" and "Evolution: the Fairy Tale for Grownups," noticed an unusually large number of negative reviews on the book sale website.

But he said he also found five-star ratings with comments such as "Great logical thinking" and "a must read."