Another 5-star mystery thriller by author Uvi Poznansky. Overdose is a stand-alone novel, but it will be much more enjoyable if the first two novels in the series are read first. The medical and technological aspects interwoven in this novel were a stroke of writing genius by the author. Ash is a wonderful MC, full of character and energy. Her rival, Dr. Patel, is one the reader will love to hate. I enjoy Uvi's writing and hope to read much more of her work. Highly recommended for the mystery lover.