So here we finally are – the last episode of Biblia Koshodou no Jiken Techou (ビブリア古書堂の事件手帖 – Biblia Rare Books Case Files). The last episode presented us with a case involving the works of Edogawa Rampo and a mysterious safe with the barest hint of how to unlock it. In her attempt to help the Kishiro sisters to decipher the code for the safe, Shinokawa (Gouriki Ayame) is pitted against her own mother (Yasuda Narumi), who has represents a party with a competing claim for the contents of the safe.
Shinokawa suspects that her mother is a step ahead, since the key to the safe – the first of three elements required to unlock it – was missing from its presumed hiding place.
In confronting her mother who has been missing for years, Shinokawa is clearly flustered. After we find out what they think is in the safe . . .