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.
An ACR 99821 was a piece of technology adored by the Eleventh Doctor, and used by Professor Alec Palmer in his research on ghosts. They included toggle switches. (TV: Hide)