But some of those old stacks have always been spooky.

Loud people, prepare accordingly. This weekend the Milwaukee Public Library will encourage thrill seekers and bookworms to get in the Halloween spirit by screaming at the top of their lungs among the book stacks. Whaat? It’s true. For this weekend only, the Central Public Library will be transformed into a haunted house.

Dubbed “Haunted Central,” this continuation of the Library Loud Days series will begin promptly at sundown Oct. 22 (5:57 p.m.) and feature spooky themed activities for all ages including a screening of The Blob, mask making and a literary scream contest from 7-8 p.m. featuring local notables as judges.

For the main attraction, dare devils will get to snoop around the fourth floor, which is usually closed to the public. The festivities will conclude Saturday at 10 p.m. and continue Sunday, Oct. 23 from 1 p.m. to 5 p.m.

Milwaukee Public Library launched Library Loud Days in July to combat the common belief that libraries have to be boring, dreary places where even the lightest whispers result in stares. The campaign invites guests to leave their inside voices at the door and engage with the community through music, art, movies, technology and of course, books. The first Library Loud event in July featured a free concert from Milwaukee’s “best supergroup” New Age Narcissism.

The library will close at 4 p.m. Oct. 22 to transform into the full-fledged haunted house. The event is free to the public.