There was a fire in the basement at Linn’s Supermaket on September 10th, 2024. Merlyn Linn no longer owns the grocery store, but my understanding is they have a contract/agreement with the store’s current owners that allows them to keep running the haunted house in the basement. Now they have cleanup/repair to do in order to meet the opening weekend.
There is a Go Fund Me page for folks who would like to help this haunt continue to operate. This will be its 40th year (established in 1984).
Here is the Des Moines Register article discussing it: