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.
Catrin was the sister of Jonathan and the daughter of Alan, all of whom had A positive blood. In 2006, when the Sycorax controlled the A positive blood in humans, threatening to make them jump from tall buildings, her mum tried to stop her. She was eventually released from the Sycorax' control. (TV: The Christmas Invasion)