Publisher's summary Edit
to be added
- Professor George Litefoot - Trevor Baxter
- Henry Gordon Jago - Christopher Benjamin
- Inspector Quick - Conrad Asquith
- Ellie Higson - Lisa Bowerman
- Mr Wednesday - Gus Brown
- Arioch/Brontach - Ian Burford
- Jago jokes that London may one day be invaded by killer unicorns.
- Jago refers to P.T. Barnum. The Fourth Doctor and Sarah Jane Smith met Barnum in the United States in 1885. (AUDIO: The Wondrous Box)
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