Zero Kill is a gripping and fast-paced thriller, full of twists and action scenes, written by M.K. Hill. A plot where many mysteries will be unraveled, while at the same time, we are following Elsa Zero, a retired secret agent, who for unknown reasons, is persecuted by half of the world's special agencies, trying to kill her.

Elsa Zero was on a perfect date, until the clock reached midnight. From that moment, most of the people she has found have tried to kill her; as an ex-secret agent, she thinks it might be related to her past and a mission in Buenos Aires that marked the end of her career. Her only possible resource is reaching some of her old mates and trying to uncover why she's a kill-target.

Hill manages to write a gripping thriller, which maintains the tension high at all the points, while at the same time introduces slowly the real plot behind the story: a conspiration that will unleash a biological weapon to devastate the world. The pacing is really fast, and there isn't a single moment to rest, as every few pages we find action scenes and explosions.

Personally, I would say that the only problem with this book is that the characters have almost no time to be developed: most of them last for a few pages, and outside of Elsa and Saint, they feel too plain. The villains' motivations are kinda pointless and simple, they are okay to advance the plot, but not much more.

Said that, Zero Kill is excellent as a thriller, a novel that would be perfect for those that enjoyed John Wick: Parabellum and The Bourne Identity. It's a book that you will devour, because it hooks you from page one until it finishes.