J.K. Rowling loves a good mystery,Watch Young & Beautiful Vol. 10 Online whether she's writing it into a novel or simply tantalizing her fans on Twitter.

The Harry Potterauthor, who regularly changes her Twitter header, switched it Thursday morning to a cryptic painting: Still Life: An Allegory of the Vanities of Human Life.

"Don't you like it?" Rowling responded coyly when a fan asked her what prompted the new image. She went on to give precious little more information...

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Among Rowling's current works are the fourth Cormoran Strike detective novel penned under pseudonym Robert Galbraith, and a second work about which little is known. Still Lifeis "essentially a religious works in the guise of a still life," and cautions the viewer not to place too high a stock in wealth and vanity. Each object has a symbolic meaning -- death, wealth, knowledge and so on -- which relates to many of the overarching themes in Rowling's works.