Victoria Holland 
The Magic Show From Hell (2024) [EPUB ebook] 

Two teens, avid explorers of abandoned places, discover the story of a once-famous theme park and its resident magician, Papa Grande Di Magico, or Grande Alexander Willow. Despite the town’s attempts to forget the tragic events of 1993, when the magician killed his boss, the teens, along with a young child, decide to investigate the decaying park. Unbeknownst to them, Grande Willow never left-he’s been hiding there for decades. When one of the teens tries to steal something, the unstable magician snaps, leading to a terrifying and brutal conclusion to their adventure.