Blake Pierce is the phenomenon that is called Book Packaging. That means that an entire editorial team is writing under one author's name. This assumption was made by users of Reddit.com. They did a little research and found out that no writer could have written more than 120 books in 16 series in five years on their own.
So Blake Pierce is a collective ghost murder/mystery writer. He has no photo or biography. The official website only has a long list of books published under his name. The "Riley page" mystery series is on the USA Today bestselling list. It is a dark psychological thriller that includes seventeen books.
Photo credit: Cover of "Once gone" (A Riley Paige Mystery–Book #1)