The War Master, announced in June 2017, is a Big Finish Productions audio play series based on the TV show Doctor Who. It sees the return of Sir Derek Jacobi as The Master, a role he previously portrayed in the TV story "Utopia". The first volume consists of a four-CD box set; it was released in December 2017. In July 2018, a further 3 series were confirmed for release between December 2018 – December 2019.