Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.
Miss Mackenzie was a maid and a nurse in the employ Alan Campbell, who was actually the Master. She cared for Mr and Mrs Campbell, actually Aeroliths whose life forces were being extracted by the Master. When the Seventh Doctor and Ace arrived, she became more suspicious about her employer until he finally revealed himself as the Master.