News, views and top stories in your inbox. Don't miss our must-read newsletter Sign up Thank you for subscribing We have more newsletters Show me See our privacy notice Invalid Email

Harry Potter fans are in for a treat this Halloween as JK Rowling is releasing a short story about evil witch Dolores Umbridge.

Fan website Pottermore revealed the new exclusive 1,500-word biography would be posted online on Friday, October 31

A spokesman for the Scottish author confirmed to the Mirror it would be "filled with many new details, as well as Rowling’s revealing first-person thoughts and reflections about the character".

Pottermore was launched by JK Rowling for fans in 2011 as a way to bring the teenage wizard's adventures to the digital generation.

Video Loading Video Unavailable Click to play Tap to play The video will start in 8 Cancel Play now

Dolores, former Senior Undersecretary to the Minister for Magic, was first introduced to readers in the fifth book in the magical series - Harry Potter and the Order of the Phoenix.

She was played in the film by actress Imelda Staunton.

The prim, proper and pink-loving professor, is not only one of the most malicious characters, she is the only person other than you-know-who to have left a permanent physical scar on Harry.

Earlier this month, stars flocked to the opening of a new Dark Arts section, complete with Dolores Umbridge's office at the ministry, at the Warner Brothers Harry Potter tour in Hertfordshire.

We can't wait for JK's latest release - it seems like only yesterday we were watching an 11-year-old Daniel Radcliffe in the first film in 2001... how time flies!

Pottermore includes previously unpublished material about some of her characters and allow readers to interact with the stories, as explained below.