Doctor Who Series 7: New Companion Says Her Debut Will "Confuse And Surprise"

“There’s definitely a story arc,” she continues. “It sounds really interesting, really exciting. I don’t think anything’s been done like it before, but there are lots of secrets and intrigue, and I think it’s going to throw and confuse a lot of people, and surprise a lot of people...”

Coleman’s character will make her debut in the 2012 Christmas special.