Death washes ashore
(Book)

Series numbering from Goodreads.com.

"In the wake of a brutal storm that lashed the Door County peninsula, Sheriff Dave Cubiak assesses the damage: broken windows, downed trees, and piles of mysterious debris along the shoreline. He leaves the comfort of his home and heads out into the aftermath, checking in with folks along the way to offer help. His assistant, marooned at the justice center overnight, calls with an ominous message about a body discovered on the beach. When the medical examiner discovers the man didn't simply drown during the storm, Cubiak searches for answers. Chasing leads, the sheriff learns the victim directed a troupe of live-action role players living in an ersatz Camelot. In a setting where pretense in the norm, Cubiak must determine if suspects are who they say they are or if their made-up identities conceal a ruthless killer. As tensions escalate among neighbors unhappy about the noise and commotion, the sheriff discovers that more than one person on the peninsula has a motive for murder."--Publisher.