"Anna often had the impression of being imprisoned within a maze, five minutes before closing-time. Its windings were neither numerous nor complicated; but, if she lost her head and took a wrong turning in her haste, she might reach the outlet-only to find the door locked." The "maze" is Soviet Russia, where Ann Brown (alias "Anna Stephanovitch"), a young English woman, lives quite happily for one summer. But then friends of her are arrested. Fear...