The Echo Wife is set in the near future when the science of human cloning has advanced, and the laws surrounding it have changed. Evelyn Caldwell is a brilliant, driven, award-winning scientist who has pioneered advancements in human cloning. She knows what she wants and is clear about it. Evelyn's ex-husband Nathan has used her techniques to make a more docile, agreeable version of her called Martine. The story starts with Nathan's murder. I won't describe the plot more so as to avoid spoilers. The science in this book is absolutely fascinating and the story is well-written, riveting and compelling. I was unable to put it down. The characters are morally grey at the very least and the story raises many ethical issues regarding human cloning. Evelyn's character is well-developed and she grows throughout the story as she learns to become more empathetic. The Echo wife is clever, dark, unsettling and calibrated for maximum squirm. I loved it.