"Vivid whodunit plotting... magnificent concept."

• The Magazine of Fantasy and Science Fiction "One of the most believable science-fiction books in years."
• Astounding Science Fiction "Half brilliant imaginative science-adventure-detective story, half bitter and biting social satire, Dreadful Sanctuary is one of the more adult additions to the growing shelf of reprints from the Fabulous Forties."
• Galaxy Science Fiction "Essentially a spy story, a good and exciting one, full of suspense."
• The New York Times