So, Pamela Aidan is someone who writes stories. Her stories are called books, and they are about a man named Fitzwilliam Darcy. Darcy is a character from a very famous book called "Pride and Prejudice" by Jane Austen.
Pamela Aidan takes this character, Darcy, and writes new stories about him. She imagines what Darcy's life was like before and after the events in Jane Austen's book happened.
She puts a lot of detail into these new stories, like what Darcy wore and what he ate and how he felt about things. She also creates new characters for him to interact with. Her stories are kind of like adding more pieces to the puzzle of Darcy's life.
So, if you like the character of Darcy from "Pride and Prejudice," you might enjoy reading Pamela Aidan's books to learn more about him.