Martha just grins back at Eight. "I'll tell you some tales on the road if you like. I've found it's a brilliant way to pass the time." Nothing like it, really, almost like watching a film on a plane. Almost, anyway.

"But it's not fun to be cranky in the middle of the adventure. I'm a complete brat when I don't have my beauty sleep." Which actually isn't true; she's learned to function well on as little sleep as possible, thank you medical school and residency.