Harry Potter fever is still burning hot.

Photos have been springing up on social media of fans leaving socks for a bloodied Dobby in a glass case at the Warner Bros. Studio Tour of "Harry Potter" in London. The news was first pointed out by the Hogwarts Logic Twitter account and subsequently retweeted by J.K. Rowling herself.

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As a refresher, Dobby was an imprisoned house elf in the "Harry Potter" novels, and house elves in the book's universe can only be freed when a human gifts them an item of clothing.

Harry famously frees Dobby by tricking his owner into giving him a sock. #FreedomforDobby.