黒い犬 (創元推理文庫)

The plot is layered with subtle hints and red herrings. I'm curious whether this was planned from the beginning or developed as the story progressed.

The bleak, wintry landscape seemed to mirror the dark themes. How much do you think the setting influenced the overall mood of the story?

Their personal histories felt so authentic and layered. I wonder what prompted the author to develop these particular backstories.