Manages the Keller Machine's criminal reconditioning process at Stangmoor Prison for the absent Emile Keller. Successfully reconditions inmate Barnham into an innocent state, but is killed when the machine is operated.
The Doctor investigates the controversial criminal treatment method overseen by Kettering.
Kettering operates the machine under the direct orders of the Master, who poses as Emile Keller.
Explore the full interactive character relationship map of Doctor Who: The Mind of Evil