Time and Space Investigation Department 4: Castle Phantom

One day, an assault occurred at the relay station set up in Thuringia in the 11th century, and the station manager, Colton, was injured by a dart. Before Colton passed out, he only said one thing, indicating that there was a ""devil"" in the castle! Why did Colton go to the castle? What happened in the castle? Who is the ""devil"" that Colton mentioned? The Alpha Team will travel to Thuringia in the 11th century to unravel these mysteries one by one.