Competent if uninspired thriller about a young mother whose two children are kidnapped -- on the seventh anniversary of the kidnapping and murder of her two previous children. Made the Mystery Writers of America's list of the top 100 mystery novels of all time, probably due to the remembered effect on its members of the book's then-novel theme of child molestation (though, to be fair, it should be noted that the bad guy, even today, remains a compelling character). Clark's first suspense novel. Based in part on the real life Alice Crimmins case, of a young wife and mother accused of killing her two children. Made into a movie in 1986, starring Jill Clayburgh.