With their gloomy house in isolated woodland, overlooking a dreary bay and containing a mask from Japanese Noh theatre that is rumoured to carry a curse, it’s frankly amazing that no-one in the Chizui family — “[r]iven by mutual suspicion, hatred and a sheer failure to understand one another…” — has been found murdered in a locked room before. Thankfully, hard upon the return of Hiroyuki Ishikari to the area, ostensible head of the family Taijiro is found thus slain, and mystery fan Akimitsu Takagi is on hand to help dig to the bottom of the tangled skein that will see yet more of the clan wiped out in the days that follows. Though how much use he’ll be is up for debate.
Since Soji Shimada’s 
The Invisible Event 