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The Fine Art of Invisible Detection Subclass_Budgeting Buku ini merupakan gabungan penyelidikanUmiko Wada has recently had quite enough excitement in her life. With her husband recently murdered and a mother who seems to want her married again before his body is cold, she just wants to keep her head down. As a secretary to a private detective, her life is pleasingly uncomplicated, filled with coffee runs, diary management and paperwork. That is, until her boss takes on a new case. A case which turns out to be dangerous enough to get him killed.