Dalek scouting party
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Some accounts held that a Dalek scouting party captured the Old Master (PROSE: Dalek: The Astounding Untold History of the Greatest Enemies of the Universe) in the Valley of the Kings, in Egypt, (AUDIO: Mastermind) whereupon he was placed on trial for his life (TV: Doctor Who) by the Dalek Prelature and ultimately executed. (AUDIO: Mastermind)
A conflicting account held that the Master's trial arose when, in another incarnation, the renegade came to Skaro of his own volition. (PROSE: The Eight Doctors)