Alan Stevens has written, edited and developed numerous publications on telefantasy series, including The Prisoner, Doctor Who and Blake's 7 (notably Liberation: the Unofficial and Unauthorised Guide to Blake's 7, also from Telos). Since the early 1990s, he has produced a number of documentaries, serials and dramas for radio and independent audio release, including The Prisoner-inspired Blake's 7/Doctor Who spinoff series Kaldor City.