A Ravenclaw, a Slytherin and a Hufflepuff walk into a bookstore. … It may seem like the beginning to a bad Harry Potter joke, but it's not.

Clad in wizard garb and T-shirts proudly supporting their Hogwarts houses, fans of the franchise on Saturday night did something they haven't done for almost a decade. They piled into the Union Square Barnes & Noble just before midnight to get their copy of "Harry Potter and the Cursed Child," the hotly anticipated continuation of J.K. Rowling's series.