JK Rowling is putting the wizarding world behind her to focus more on crime.

The beloved author recently revealed that she plans to pen more crime thriller novels and create a series that will run longer than Harry Potter, which ran seven books.

So far, Rowling already has two crime novels out - "The Cuckoo's Calling" and "The Silkworm" - which she published under the pseudonym Robert Galbraith. The novels feature Cormoran Strike, a military veteran who turned into a private eye.

"The Silkworm" topped the Sunday Times bestseller list after it was published in June. Rowling's first crime novel was published in 2013.

The multi-millionaire author said she loves writing in the crime genre because it is open-ended, in which the lead will have to take a variety of cases rather than being tied to a single plot.

"It's pretty open ended. I really love writing, so I don't know that I've got an end point in mind," Rowling said during the Theakston Old Peculier crime writing festival in UK, according to The Guardian. "One of the things I love about this genre is unlike Harry Potter, where there was a through line, where there was an overarching story, a beginning and end, you are talking about discreet stories. So while a detective lives, you can keep giving him cases."

Rowling, who has been credited with launching a new generation of book lovers courtesy of her Harry Potter series, also explained why she had to write under a new name for her new series.

"I wanted to prove to myself that I could get a book published on the merits of the book. A friend of mine said, 'why did you need validation?', and I think possibly you need to be a writer to understand why," Rowling said.

The bestselling author said she loves crime fiction, and in fact, has drawn inspiration from it for her Harry Potter books.

"I love crime. I've always loved it. I read a lot of it ... and I think the Harry Potter books in many ways are whodunnits in disguise," Rowling said.