This is a very well-written but l-o-o-o-o-n-g book that narrates a historical situation in which Sudden Infant Death Syndrome (SIDS) intersects with a psychological disorder called Munchausen by proxy to illuminate a curious slice of cultural history in the United States.
I think I can write this without spoiling the denouement, since it IS historical fact and a reader might likely read about it from news sources besides this book. To me, the fascinating thing is that it relates the story of a psychology researcher about SIDS when he writes a study that shows that, according to his experiments and observations, SIDS can be predicted by sleep apnea episodes in infants. The study makes the scientist the leading figure in SIDS research in the U.S., and his ego seems to rise in proportion to his fame to the point that if he hasn't been involved in a SIDS study, it's likely inaccurate or inauthentic. The problem that he has is that he's such a great salesman for his own idea that he starts to neglect the statistical basis for his thesis, which is that SIDS occurs in families and one death by SIDS is a likely predictor of another death in that family.
The huge irony of this viewpoint is that the clinical study on which the researcher bases his entire argument is one of a family who suffers five consecutive crib deaths. His deductions on how this could happen or how it could have been prevented is rendered moot when the issue turns out to be not one of bad luck, but intentional infanticide. One mother has four infants and one toddler die on her when no one else is there to witness the death, and from this story an entire theory is based on how crib deaths happen. But as it turns out, the mother turns out to have smothered her children because she has Munchausen by proxy syndrome, in which she injures or kills her children to draw more attention to herself, since she is greatly dependent of the attention of others for her own self-esteem.
So there are two conflicting themes here: The first is one of the increasing hubris of the researcher who thinks he is ultimately the single national authority on SIDS, and the increasingly flimsy case that represents his thesis--flimsy because the children have been murdered by their mother and don't represent SIDS cases at all.
The book is a long, long read, but it's very insightful both for the revelations of human nature as scientists fight with one another to be right, lawyers do the same thing, and the truth turns out to be totally different from what either group is projecting. The truth, however, is not discovered until the entire SIDS phenomenon turns out to be much different than first thought.
I'm not making this sound very exciting, but the book is actually fascinating as investigators disclose that the emperor's new clothes turn out not to exist.