Cast
- Geoffrey Beevers (The Master)
- Daphne Ashbrook (Ruth Matheson)
- Yee Jee Tso (Charlie Sato)
Technical Details
- Cover Artist: Anthony Lamb
- Director: Ken Bentley
- Director: Jason Haigh-Ellery
- Executive Producer: Nicholas Briggs
- Executive Producer: Jason Haigh-Ellery
- Music: Daniel Brett
- Producer: David Richardson
- Script Editor: Jacqueline Rayner
- Sound Designer: Neil Gardner
- Writer: Jonathan Morris
- Number of Discs: 1
- Duration: 60
- Physical Retail ISBN:978-1-78178-083-1
- Digital Retail ISBN:978-1-78575-854-6
- Production Code:BFPDWCC69
Doctor Who - The Companion Chronicles
8.1. Doctor Who: The Companion Chronicles: Mastermind
Written by Jonathan Morris
Starring Geoffrey Beevers Daphne Ashbrook
US $108.12 as part of the following bundle