J K  Rowling has announced that she will soon be releasing the third installment of ‘Harry Potter’ trilogy titled Career of Evil under her pseudonym of Robert Galbraith.

The 49-year-old British novelist J K  Rowling’s new book will supposedly follow the investigations of private detective Cormoran Strike and assistant Robin Ellacott, Mashable has reported.

The publishing company Little Brown described the new book as a fiendishly clever mystery.

Rowling broke the news via Twitter calling her pen name her “good friend” and announcing that the book will be released on October 22.