An eighth Harry Potter book will go on sale Sunday – a play this time instead of a novel – and the Bookstore Plus in Lake Placid will once again host a midnight release party.

Unlike side volumes in the Harry Potter universe that have been published in the nine years since “Harry Potter and the Deathly Hallows,” the new play, “Harry Potter and the Cursed Child,” will pick up the storyline of the famous wizard – a boy no longer.

In Saranac Lake, Moose Maple Books & More isn’t hosting a party but is still geared up to sell “Harry Potter and the Cursed Child.” Co-owner Liz DeFonce said she has taken pre-orders and will keep the store open Sunday and Monday, days it’s normally closed, to cater to Potter fans.

The Bookstore Plus is sweetening the deal with a wide array of attractions to lure fans of author J.K. Rowling’s “wizarding world” from 11:55 p.m. Saturday to 1 a.m. Sunday. There will be a costume contest in which the winner gets a free book – a significant prize considering the $29.99 cover price – as well as a “pin the scar on Harry” game and Potter trivia contest, according to bookstore events coordinator Najma Rogers. To get into the Main Street shop, people will have to walk through what appears to be a solid wall, like at train platform 9-and-three-quarters in the books.

Inside, Rogers said, there will be a make-your-own-wand and coloring stations, and attendees will be able to taste a variety of “potions” – actually just water colored with food dye for fun. There will also be wizarding world refreshments including butterbeer – non-alcoholic, on special order through Green Goddess Natural Market – and candies such as Chocolate Frogs and Bertie Bott’s Every Flavour Beans, which include gross flavors such as ear wax and vomit (made in the real world by Jelly Belly).

Readers lined up all over the world at midnight releases for past Potter novels, the last in 2007. In small, local bookstores, it was a significant economic boost.

The new story, which Rowling co-wrote with playwright Jack Thorne and director John Tiffany, picks up 19 years after “Deathly Hallows.” Potter is struggling with his past and as an overworked civil servant with the Ministry of Magic. Meanwhile, his son Albus has adventures of his own at Hogwarts School of Witchcraft and Wizardry.

The play opens at London’s Palace Theatre Saturday, the day before the book release. It has received high praise from media critics so far.