A sequel to "The Boggart" in which the playful spirit comes to the aid of his long-lost cousin, trapped in the form of the Loch Ness Monster. Emily, Jessup and Tommy join with the Boggart to help Nessie regain his boggart form, and dodge the hordes of scientists and tourists eager to capture him.
Susan Mary Cooper (born 1935) is an English-born American author of children's books. She is best known for The Dark Is Rising, a five-volume contemporary fantasy series set in England and Wales, which incorporates British mythology, such as the Arthurian legends, and Welsh folk heroes. For that work, she won in 2012 the lifetime Margaret A. Edwards Award, which the American Library Association annually confers upon an author and specified writings for "significant and lasting contribution to young adult literature".
Susan Cooper. Wikipedia.