Graceless - Series 2

Abby and her sister Zara are not real people. They were created by pan-dimensional beings to help save space and time. They've been blessed with special powers. They can see into people's heads, even influence their thoughts. And, so long as they're together, they can go anywhere or when. But the universe is dangerous, unpredictable. Abby and Zara have made mistakes - and many thousands have died....