Aka Oni Mura Fire Festival Murder Case

Conan sees Kogoro spying on a man a company owner asked to watch for three days. The next day, the watched man is discovered in a bonfire at the Aka Oni Mura Fire festival. The company owner recieves the inheritance money, and he wreaks of guilt. Though he was on vacation at the time of the murder. Can Conan crack his ""perfect alibi""?