Heirs of Darkness is Zilpha Keatley Snyder's trip into the world of adult fiction à la Judy Blume. Snyder's following is of a kind that enjoys the unusual, the mysterious, and most of all, characters one cares about. One must really want to pursue these aspects in this novel; otherwise, it is quite like any other modern gothic…. One of many in a very crowded field, Barbara Michaels, et al. does it better.

Christine Kardokas, "'Heirs of Darkness'," in Young Adult Cooperative Book Review Group of Massachusetts, Vol. 15, No. 2, December 1978, p. 39.