The series was created and written by David Farr and stars Esme Creed-Miles and Mireille Enos. The first episode was made available on Amazon Prime Video as a time-limited preview on February 3, 2019. The full eight-episode first season was released on March 29, 2019, and the second season released on July 3, 2020. In July 2020, the series was renewed for a third and final season, which premiered on November 24, 2021.
Hanna is a 15-year-old girl living with Erik, the only man she has ever known as her father. Erik once recruited pregnant women into a CIA program, code name UTRAX, where the children's DNA was enhanced in order to create super-soldiers. When Erik falls in love with Johanna, Hanna's mother, he rescues baby Hanna and they flee. The CIA then orders their on-site agent, Marissa, to shut down the project and eliminate all the babies.