Miss Norton's contributions have ranged from virtually pure SF to almost equally pure fantasy. [Dread Companion] leans heavily toward the latter and is somewhat below her usual high standard…. Miss Norton's skill at style and characterization give the book readability and interest, but the plot has a murky vagueness at times. However, female protagonists are rare in juvenile SF, and even a below-average Norton is better than much of the SF//fantasy floating around today. (p. 64)

Elizabeth Haynes, in School Library Journal (reprinted from the December, 1970 issue of School Library Journal, published by R. R. Bowker Co. A Xerox Corporation; copyright © 1970), December, 1970.