Yajima, a man who has just gotten out of prison, pays Shinjurou a visit. It turns out that he's an old friend of Kaishou
and he asks the young detective to break a secret code. Folded inside of a purloined book from Kaishou's library is a piece of paper from Yajima's own personalized manuscript paper with a series of numbers written on it. The decoded message indicates a planned rendezvous, which leads to the suspicion that Kaishou and Yajima's wife had an affair while Yajima was incarcerated. But where are the Yajima children, who suddenly disappeared one day? ...more