Something wicked descends tonight, shrouding the woods of Sammamish and the waters of Beaver Lake in darkness.

The Sammamish Rotary Club’s 10th annual “Nightmare at Beaver Lake” kicks off at 7 p.m. at Beaver Lake Park. The annual indoor/outdoor interactive haunted house serves as a fundraiser for Rotary programs, drawing families and the truly brave from across the Puget Sound area.

Sammamish Rotary President Cary Young, who also serves as the chairperson for “Nightmare,” hopes to build off of last year’s show, which drew 13,000 patrons and more than $180,000 in donations.

“The Rotary Club of Sammamish disperses approximately $90,000 per year to local nonprofits whose services focus on families and children, and the underserved,” Young said. “We like to fund projects that help folks help themselves to take care of themselves and their families.”

The Rotary Club also provides support for health initiatives in Luz de Manana, Nicaragua, along with polio eradication campaigns.

This year, “Nightmare” also will see the return of “Goliath,” a 9-foot tall animatronic gargoyle absent from last year’s event for restoration.

Shows run every Friday, Saturday and Sunday night from 7-11 p.m. The first hour of every night is reserved for a toned-down performance suitable for small children and families. Tickets are $11 for this “Family Scare” hour per person, and $18 for the “Full Scare” period per person. Fast pass tickets are also available for an additional $10, and patrons with a non-perishable food item to donate will receive a $1 discount. All food donations will benefit LifeWire.

For more information, visit www.nightmareatbeaverlake.com