Celebrated author Robert Galbraith must be so busy these days! Afer all, the HBO series based on his bestselling thriller "Casual Vacancy" is set to premiere next week on April 29th. Oh, and he's also been hard at work at the screenplay for the "Fantastic Beasts and Where To Find Them" movie trilogy, too.

Confused? It's because Galbraith is actually "Harry Potter" creator J.K. Rowling, who began writing under the pseudonym to bypass all the hype that comes attached with her own name.

It didn't work, of course, because her ruse was discovered soon after Galbraith's first book "The Cuckoo's Calling" was published in 2013 But she still hasn't given up on her alter ego, because according to publishing house Little Brown UK, "Galbraith" has another book on the way:

Rowling had some fun with the announcement on social media as well, along with her crime novel counterpart:

Normally when people talk to themselves on social media it's cause for concern... leave it to Rowling to make it kind of adorable!

According to Galbraith's Twitter, this is the third book in the "Cormoran Strike" series, following "The Cuckoo's Calling" (2013) and "The Silkworm," (2014). The series follows a down-on-his-luck private investigator named Comoran Strike as he solves mysteries in London with his assistant, Robin Ellacott.

We also know that the title, "Career of Evil," is a direct reference to a popular Blue Oyster Cult song of the same name.

Think you can pick up any more clues from listening to the song itself?