This collection investigates the boundary between legitimate scientific inquiry and the proliferation of pseudoscientific claims in contemporary culture. Martin Gardner, a renowned mathematician and long-time columnist for Scientific American, utilizes his extensive background in logic and skepticism to dissect various fringe theories. Through a series of analytical essays, he provides a framework for evaluating evidence and identifying the logical fallacies inherent in occult and paranormal assertions.

Experts frequently cite this work as a foundational text for those interested in the history of scientific skepticism and critical thinking. Readers often note the accessibility of Gardner's prose, which manages to remain rigorous while addressing complex logical errors in popular belief systems.