Anne Ridler who played Kate Kestrel and Cy-Star had died in 2011, and was replaced by Beth Chalmers, and Windsor Davies (since retired) who played Sergeant Major Zero was replaced by Jeremy Hitchen. The new audio stories were produced by Anderson Entertainment in association with Big Finish Productions. The first new series was released in April 2015, followed by a second series in April 2016 and a third in July 2017. Each series consisted of a 5-CD set, with eight episodes across four CDs and a behind-the-scenes documentary on the fifth featuring interviews with the cast and crew.