Who put the cat among the pigeons? Unfortunately we are unable to get hold of a copy of the book. Please can anyone help.

put/set the cat among the pigeons (British & Australian)
to do or say something that causes trouble and makes a lot of people angry or worried. "Tell them all they've got to work on Saturday. That should set the cat among the pigeons. "

This is an idiom... You did not say what book you found this in.

The phrase "put/set the cat among the pigeons" is indeed an idiom, often used in British and Australian English. It means to do or say something that causes trouble or agitation, making many people angry or worried.

While you didn't mention which book you were unable to get hold of, I can help you with figuring out who put the cat among the pigeons in a specific context if you provide more information.

If you have a specific book or story in mind, you can try the following steps to find out who put the cat among the pigeons:

1. Search online summaries or reviews: Look for summaries or reviews of the book you are interested in. Many reputable websites provide summaries and analyses of popular books, including information about the plot, characters, and key events.

2. Join book discussion forums: Participating in online forums or communities dedicated to discussing literature can be helpful in finding answers to specific questions about a book's plot or characters. You can post your question and see if other members can assist you in finding the information you seek.

3. Consult a library or bookstore: If the book you're looking for is not available to you directly, you can try reaching out to your local library or bookstore for assistance. They might be able to help you access the book or provide other resources to find the information you're seeking.

4. Utilize online platforms: Platforms like Goodreads, which allows users to review and discuss books, can often provide valuable insight and information about specific books. Searching on Goodreads or similar websites may yield results or discussions related to the book in question, potentially providing the answer you're looking for.

Remember that the idiom "putting the cat among the pigeons" is a figurative expression and may not refer to an actual cat and pigeons in the book you are interested in. It is essential to understand the context in which the phrase is used within the story to determine who caused trouble or agitation.