The Catalyst (audio story)

Publisher's summary
The pride of the Z'nai matches that of Leela of the Sevateem. Why would the Doctor imprison one in such an unlikely place, and what terrors will be brought about by letting it loose?

Cast

 * Leela - Louise Jameson
 * Additional voices - Timothy Watson

Continuity

 * Leela recalls growing up with Tomas and Jabal. (DW: The Face of Evil)