Sidney Sheldon's Angel of the Dark

The mix of suspense and romance felt seamless, but I'm curious whether this was a deliberate choice or evolved during writing. Did it affect how the pacing was structured?

I loved the surprises, but some plot twists felt a bit abrupt. Were they planned from the start or did they develop naturally as the story unfolded?

The vivid descriptions really drew me in, making the world feel alive. I wonder if the author drew from real-world locations or crafted a completely fictional place.