A Casa das Borboletas (Capa mole)

The suspense kept me on the edge of my seat throughout, but I'm curious about the creative choices behind building that tension. Was it planned from the start or did it develop as writing progressed?

The characters felt so real and layered, even with the grim surroundings. I wonder if their personal stories were based on real experiences or entirely fictional.

The setting feels almost like a character itself, with its atmosphere adding so much to the mood. Did the author draw inspiration from a specific place or experience?