PREQUEL

Story set at an earlier time than is covered in a previous work (7)

Solution has appeared in 2 crosswords (2 across and 0 down):

• Quick crossword No 16,650 — 2023-09-15 23:00:14
  21A: Story set earlier than one already published (7)
• Quick crossword No 16,020 — 2021-09-09 23:00:12
  9A: Story set at an earlier time than is covered in a previous work (7)