Emerald Star is the 2013 sequel to Hetty Feather and Sapphire Battersea written by best-selling British author Jacqueline Wilson and illustrated by Nick Sharratt.

However, he already has a family of his own – his wife Katherine, with whom Hetty shares an instant hatred and rivalry, and their children Mina and Ezra, who are equally reluctant about her.

She bitterly realizes she won't fit in Monksby, and soon receives a letter from Jem, telling her the news of her foster father's death.

Though Hetty feels equally unwelcome among her foster family, she receives a warm welcome from Jem and befriends his childhood friend, Janet.

The circus returns and Hetty reunites with her childhood idol, Madame Adeline, and meets a little girl called Diamond, who is terrified of her abusive master, Beppo.