Lydia (Too Many Masters)
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Lydia was on the the slaves the Ogrons have. She told Missy that she was a time traveller and was captured because of it. She flirted with the Monk in order to find the location of The Monk's TARDIS. She went to the library to find more about the sacrifice ceremony, not realising that there was a Librarian. She was killed after entering The Monk's TARDIS by Missy. (AUDIO: Too Many Masters)
