J.K. Rowling wrote a new Halloween-themed Harry Potter story, and you can read it right now

As she grew older and harder, and rose higher within the Ministry, Dolores's taste in little girlish accessories grew more and more pronounced; her office became a place of frills and furbelows, and she liked anything decorated with kittens (though found the real thing inconveniently messy). As the Minister for Magic Cornelius Fudge became increasingly anxious and paranoid that Albus Dumbledore had ambitions to supersede him, Dolores managed to claw her way to the very heart of power, by stoking both Fudge's vanity and his fears, and presenting herself as one of the few he could trust.

Dolores's appointment as Inquisitor at Hogwarts gave full scope, for the first time in her life, for her prejudices and her cruelty. She had not enjoyed her time at school, where she had been overlooked for all positions of responsibility, and she relished the chance to return and wield power over those who had not (as she saw it) given her her due. [Today.com]