I understand the appeal of finding free versions of books like 'Slave'. However, I must emphasize the importance of supporting authors by purchasing their works legally. Platforms like Amazon Kindle, Google Books, or even local libraries often offer affordable or free access through legitimate means. If you're looking for free reads, I recommend checking out Project Gutenberg for classic literature or Open Library, which provides legal access to many modern titles.
For 'Slave' specifically, it's unlikely to find it free legally, as it's a contemporary work. Piracy sites might offer it, but using them harms authors and the publishing industry. Instead, consider checking if your local library has a digital lending service like OverDrive or Libby. Many libraries also offer interlibrary loans, so you might be able to borrow it even if they don't own a copy. Supporting authors ensures they can keep writing the stories we love.