Ugh. If I believed the publisher's hype that this is among the best that Japanese crime fiction has to offer, I'd be done with Japanese crime fiction here and now.
Natsuki knows how to write "atmosphere", but how she could ever have become (according to her American publisher) "one of Japan's most popular mystery writers" is utterly beyond me. And while I do believe that Natsuki really was trying to copycat Agatha Christie, all she produces is an overly convoluted plot and a novel brimming with inconsistencies. From egregious scene continuity issues to essential information being gathered "off stage" by teams of policemen elsewhere, to characters behaving purely as the author's plot sequencing and writerly convenience dictates (with little to no regard for, and repeatedly even contrary to what should have been both their inner and their outer response to events), to a clichéd "woman facing off against villain during dark and stormy night" final scene, the novel abounds with things that either should have been weeded out in the editing process or should have prevented it from being published altogether.
Worst IMHO, however, are the police, who
* let a family -- all of whom are suspects -- merrily go on living in the very house that constitutes the crime scene without having cleared the scene first (thus affording the suspects plenty of opportunity to tamper with the scene ... which promptly happens),
* give press conferences in the very building that constitutes the crime scene (again before the scene has been cleared -- allowing for the reporters to further muddy the scene),
* allow the suspects to be present at those press conferences (oddly, without a single reporter showing any interest in approaching the suspects -- instead, the reporters wait until most of them have finally departed to Tokyo, to then fruitlessly stalk the premises from outside at night),
* reveal every last scrap of information -- including and in particular things only known to the police and the culprit(s) -- to the press,
* and involve a civilian who only a day earlier had still been one of the suspects (and should actually be charged with conspiring to conceal a crime / as an accomplice after the fact) in an ill-conceived, risk-prone, and promptly almost fatally derailed scheme to entrap the killer.
Oh, and did I mention that -- though I can't comment on the substantive details of the Japanese legal provision central to the plot (which gets cite-checked to numbing point in the final part of the novel) -- Natsuki's research, if any, on the legal issues that I can comment on is seriously off as well? (Which, in turn, may actually explain the otherwise inexplicably stupid behaviour of one particular character.)
Well, I guess at least I finally get to check this one off my TBR ... and check off Japan on my "Around the World in 80 Books" challenge.