[Doorways in the Sand] is just great fun. Fred Cassidy, professional college student (thirteen years and no degree) is suddenly the target of everyone searching for a missing alien artifact….

Classic space-mystery, this can not miss with the sci-fi crowd. And young adults might identify with someone who has spent nearly all his life in school.

Robin Adams, "'Doorways in the Sand'," in Young Adult Cooperative Book Review Group of Massachusetts, Vol. 13, No. 2, December, 1976, p. 66.