When J.K. Rowling tweeted a series of cryptic clues on Monday (6th October), many Harry Potter fans were already throwing on their Gryffindor scarves and drawing a lightning bolt scar on their foreheads in anticipation of a new book. 

J.K. Rowling
J.K. Rowling at the London premiere of Harry Potter and the Deathly Hallows: Part 1.

Read More: Wait, Is J.K. Rowling Working On A New Harry Potter Book?

After challenging her fans to solve an anagram, Rowling revealed she had "a novel to finish and a screenplay to write". This sent fans into a frenzy but the excitement appears to have all been in vain as Rowling is reportedly referencing the upcoming adaptation of Fantastic Beasts and Where to Find Them, which is also set in Harry Potter's magical world.  

The film is based on one of Harry Potter's school books - which Rowling created into an actual short book in 2001 - and follows the adventures of writer Newt Scamander. According to IMDb and hints from Rowling, Scamander's antics are set in New York sometime in the 1920s, approximately seventy years before Harry picks up Fantastic Beasts and Where to Find Them

Rowling also mentioned Newt Scamander in her anagram challenge. Rowling tweeted "Cry, foe! Run amok! Fa awry! My wand won't tolerate this nonsense" on Monday and challenged her followers to find the solution. After 24 hours of fans desperately pondering and suggesting answers, the author announced one Twitter user, Emily Strong, had managed to solve the anagram. 

As Strong had deducted, what was hidden in the anagram was "Newt Scamander only meant to stay in New York for a few hours..."

Rowling, after congratulating Strong and thanking her fans for their enthusiasm, revealed the whole excerpt. She tweeted "Newt only meant to stay in New York for a few hours. Circumstances ensured that he remained... for the length of a movie, anyway."

Read More: J.K. Rowling Hits Back At Twitter Troll Over Gay Dumbledore.