The series is based on two series of books by Leigh Bardugo set in the Grishaverse. All eight episodes of the first season premiered on April 23, 2021. In June 2021, the series was renewed for a second season, also consisting of eight episodes, which premiered on March 16, 2023. The first season adapts Shadow and Bone (2012), and adds an original storyline featuring the Crows, a criminal gang for which the eponymous duology is named.