A skillful intertwining of unlikely elements—folklore and spacelore, sorcery and science—generates an engrossing adventure [in Dread Companion]…. Despite its elaborate setting, this science-fiction fantasy boils down to a suspenseful and satisfying teen-age romance…. (pp. 483-84)
Diane Farrell, in The Horn Book Magazine (copyright © 1970 by The Horn Book, Inc.), October, 1970.