Blake’s 7 was created by Terry Nation (who also created the Daleks for Doctor Who) and ran for four years on BBC TV. It focused on a team of resistance fighters aboard their advanced ship the Liberator, who battle the corrupt forces of the Federation. The Liberator Chronicles is a series of enhanced audiobooks that is being released in a licence deal with B7 Media.

The Volume 4 box set opens with Promises by Nigel Fairs, in which telepath Cally (Jan Chappell) forces Blake’s enemy Travis (Stephen Greif) to confront a secret from his past – a secret that involves them both…

Epitaph is written by Scott Harrison, and stars Sally Knyvette as Jenna and Michael Keating as Vila. When Jenna and Vila answer a distress signal, they begin a journey that will lead to the surviving members of Jenna’s family.

Finally, in Kerr by Nick Wallace, Servalan hopes to gain an insight into the crew of the Liberator by creating a clone of Kerr Avon. But can the clone be trusted? Jacqueline Pearce stars as Servalan, and Paul Darrow as Avon.

Volume 4 of The Liberator Chronicles will be released in May 2013. Volumes 1 and 2 are one sale now, with Volume 3 available in February 2013.

A range of new Blake’s 7 novels is also available: The Forgotten by Mark Wright and Cavan Scott, and Archangel by Scott Harrison are on sale now.

Subscriptions and pre-orders are available at www.bigfinish.com