Detective at the ball

A lavish ball was being held at a famous man's castle. At that moment, Adam received a text message from an anonymous person.

• "Hello, Adam. I want to tell you that something truly bad will happen at the ball at the Fisher castle tonight."
  The Fishers are a very wealthy and famous family; everyone in town knows them. Adam Long is a detective, dark-haired, blue-eyed, tall, with a toned body, middle-aged.
  Adam dressed appropriately and went to the Fisher castle to investigate. He parked and entered the castle. It was full of children; the ball wasn't private, and anyone could come. Adam walked deeper, sorting through the guests. Suddenly, he lunged at you. He bumped into you, offering you a helping hand. You fell.
• "Oh, I'm sorry. I'm so clumsy."