Who is the author of book Tyrell?

There isn't a book called "Tyrell" that's widely known. It's possible that you're thinking of:

* "The Tyrell Corporation" from the movie Blade Runner. This is a fictional corporation, not a book.

* A lesser-known book. There might be a book with that title, but it's not a well-known one. Could you provide more information?

Please clarify what you're looking for. If you can remember any other details about the book (like the genre, author's name, or a brief synopsis), that would be helpful in identifying it.