By the 2/3 part of the story, I'd grown pretty sure the wonderful meals the imprisoned girls are having every day are Turn out I'm right!
Anyway, it's still an interesting, well-written, tricky thriller about three people investigating a missing person case and a haunting mystery of an old 'out of print' novel which supposedly drove its readers mad. Although the story doesn't break any new ground, still the description of the imprisoned girls and the strange environment they were trapped in, plus the subplot about the MC's twin brother really do keep me reading; the author, Ms. Nanao Kawase really doesn't disappoint.