Searle reviews selected works of six prominent consciousness researchers (two philosophers, three neurobiologists, and one mathematician). Two chapters, bracketing the others, represent his own views.

I find the title a hair misleading. Searle generally purports to be a naturalist rather than a mysterian. By mystery, he merely means the question, how exactly does the brain cause the mind? A majority of the book deals with analyzing the faults of the other authors rather than directly addressing this question. By the end of the book, we are maybe one tiny increment closer to an understanding of the problem.

The most entertaining parts of the book are Searle's dialogues with the two philosophers, Dennett and Chalmers. But Searle's sympathies lie more with the neurobiologists. At least two of the three neurobiological accounts are highly speculative, and are perhaps likely to be shortly rendered obsolete except as historical footnotes. But they at least give a peek as to what Searle might regard as the right flavor of account. That is, once you strip them of obvious philosophical errors.