Mein Herz so schwarz

I'm curious about the creative process behind building the suspense and complexity of the plot. Did the story evolve from a personal experience or a particular crime?

The portrayal of grief felt very raw and authentic. I wonder if the author intended to evoke such strong feelings or if it was a natural result of the story.

The British backdrop added a certain atmosphere to the story. I'm interested in whether Simpson envisioned this setting from the start or if it developed as part of the writing process.