The space-suited figures are kidnapped and Brigadier Lethbridge-Stewart leads UNIT in a rescue attempt - whilst Liz finds herself at the mercy of dangerous fanatics. Only a solo space flight by the Doctor can break the deadlock surrounding the crew of Mars Probe 7.
Closer to home, however, a deadly fear threatens a catastrophic end for the entire Earth.
Jon Pertwee is the Doctor in the soundtrack of this classic 1970 BBC TV adventure, and Caroline John, who played Liz Shaw in the original episodes, provides linking narration for this exciting seven-part story. In a bonus interview she recalls the making of the TV serial and her time on Doctor Who in general.
No, I don't mean communicating with spirits and all that rubish! I mean that sometimes the special effects of the day could not capture the best imagination of the scripts of these Third Doctor/ U.N.I.T. stories. A full cast radio production may be a much better medium. Jon Pertwee was especially delicious in this story - he was always at his best when confronting authority figures, and there were plenty to confront, here. I also liked how the sound effects hearkened back to the days of the first lunar expedition. Fans of the current Eleventh Doctor series on BBC that began with "The Impossible Astoronaut" may find some delight here. Just be warned that the pace of the action is a bit slower than a fan of the current T.V. series is used to. Nonetheless, this lifelong Doctor Who fan found many things to enjoy in this audio.
Distinguishing one male character from another was difficult as the actors' voices were similar. Both I and my 8 yr-old son kept asking "who's that". This was our first Dr. Who audio title and I was looking forward to introducing the Boy to the series. He liked the plot, overall, so it's off to find another title, hopefully with better results.