First, I should check if Steven Zorn is a real author known for ghost stories. Maybe there's a specific work in Spanish titled "Relatos de Fantasmas"? I'll do a quick check. Hmm, Steven Zorn appears to be an editor who has compiled some ghost stories. There's a collection called "Relatos de Fantasmas y Más" that he edited. So maybe the user is looking for that book in PDF format for free.

I should start the response by acknowledging the request, then explain the issues with accessing copyrighted material for free through unauthorized channels. Then, provide suggestions on where they can legally obtain the book, such as purchasing a copy, using library services with ISBN, or checking if their region offers free e-book services.

Next, the user wants it in PDF format and free. I need to be cautious here. Providing links to pirated content is illegal and violates copyright laws. It's important to inform the user about legal sources where they can access the book instead.