3. She'll Betray The Doctor By Joining Forces With Missy
Missy will be back with an almighty vengeance in Series 9 and, while it's literally impossible to predict what she'll have up her sleeve, it's likely that it'll involve Clara, since... well, there aren't many storylines that don't. She seems to be rather taken by the impossible girl, too, since she's the one who gave her the Doctor's phone number in the first place. Are they about to become allies? The Master is partial to a bit of mind control, after all. Just sayin'.