No Great Magic is a science fiction novella by Fritz Leiber published in 1963.
Sequel to The Big Time (1958) featuring amnesiac, agoraphobic Greta who plays wardrobe mistress to a company of actors between bouts of dizziness. But the troupers play even more roles than at first appears. A deftly written story.
They were a traveling group of Shakespearean players; perfectly harmless, right? wrong. For one thing, why did they have spacemen costumes in their wardrobes, next to caveman ones? Why was the girl in charge of backstage suffering from amnesia and agoraphobia? No Great Magic is needed to perform the plays they put on, but sometimes great science. No matter where, or when.
No Great Magic was first published in Galaxy Science Fiction, December 1953.