Clip from Radio times interview here
“There’s lots of rumours,” she said of her hypothetical departure in an interview for this week’s edition of Radio Times magazine.
“We’ve sat down with [showrunner] Steven Moffat and we’ve all decided we don’t want anyone to know which way it’s going.”
She added: “If you know I’m in the next series – or if you know I’m off – you’ll know how the story ends.”
However, Coleman did hint that there were big things in store for future episodes.
“Because there’s a surprise we’ve got coming, it’s much better that nobody knows which way it’s going to go – so that’s where we’re trying to keep it at the moment.”