Sans Merci (Le Livre de Poche)

The plot kept me on the edge of my seat, but I'm curious how much planning went into the twists and turns. Did the story evolve during writing?

The detective’s emotional conflicts made the story feel more real, but I wonder if that was intentional to reflect the darker side of justice.

The gritty, moody backdrop really set the tone. I’d love to know whether the author drew from personal experiences or other works for this ambiance.