咚咚咚，心跳声响起，似鼓点在夜空回响。古代破案小说

　　Sitting in a sleepy cafe in Darjeeling, Dada is designing the perfect crossword when a young, Nepali boy interrupts his work, eager to befriend him. But who is this boy? Someone's knocking and Dada has to decide if he will answer or not.