Bart Addison was a private investigator residing in Los Angeles. Mykloz, posing as an amnesiac, hired him to trace his recent movements around the city. Addison took Mykloz to Silverman, a psychometrist, who used his abilities to analyse the objects found in Mykloz's pockets. Although the objects seemed to indicate that Addison's client was the Seventh Doctor, the detective deduced that he was not. Mykloz captured Addison and took him to his hideout, where the real Doctor was also being held prisoner. Addison helped the Doctor escape and defeat Mykloz. (PROSE: Playback)

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