Once again, as in Bewitched Caverns, Lenore Rienow takes her readers into primitive, prehistoric days. But where the earlier book seemed an echo of Tarzan, this second story of the boy and girl of the cave dwellers loses the story thread too often to hold the interest of the children who felt the intensity of sustained and exciting- if unconvincing- adventure. The plot is based on the intense fear of the supernatural, common to that era; it is full of primitive superstition and hocus pocus; but it fails to establish any response for young moderns. The earlier book, with all its faults, pushed aside the thousands of years. This seems to be chiefly stage props and stage sets- with no reality in story or characters. Disappointing.