Trick or treat?

Last week, J.K. Rowling’s website Pottermore announced that the writer would be unveiling a new 1,700 word story about Harry Potter characters on Oct. 31.

While fans were told that the story would focus on Dolores Umbridge, a former Hogwarts professor that Pottermore referred to as “one of the most malicious Potter characters,” little else is known about the new tale’s content. However, recent social media updates have been hinting at what Rowling has in store on for us on Halloween.

For example, will it involve Bellatrix Lestrange?

Here are some other hints:

Rowling released a different story based in the Harry Potter world in July.