Partly as a homage to Doctor Who, which Baggs was a fan of, and partly in a pragmatic attempt to take advantage of a pre-existing audience, Summoned by Shadows was a Who-style tale of strange doings on a distant planet starring Colin Baker as the nameless protagonist (listed in the credits as "The Stranger").
Successor Sylvester McCoy and predecessors Peter Davison and Jon Pertwee also appeared as members of a small group joined against a sinister conspiracy.
[2] With Courtney out, the focus of the series was the original character of Lockwood, an enigmatic UNIT agent played by Michael Wade.
After the success of the Auton trilogy, BBV produced Cyberon (involving a race of alien cyborgs reminiscent of the Cybermen).
A new PROBE film was released 15 April 2015 with Hazel Burrows taking over from Caroline John as Liz Shaw.
The first of the Audio Adventures in Time & Space not to include the McCoy/Aldred double act was Cyber-Hunt, the first BBV production about the Cyberons.
BBV moved away from characters-who-might-be-the-Doctor (a field that, in any case, lost some of its appeal for fan audiences once Big Finish Productions began producing officially licensed Doctor Who audio dramas with the original actors reprising their incarnation of the character) and, following the success of the Auton trilogy, focussed more on stand-alone dramas about various Doctor Who alien races, licensed directly from the writers who created them.
For some of those writers, the BBV audios have offered a chance to revisit their creations: for instance, the range includes a story by Pip and Jane Baker explaining what happened to the Rani (last seen in Doctor Who being abducted by a group of aliens that were also created by the writing pair), and a series of stories by Lawrence Miles about his history-spanning terrorist organisation Faction Paradox.