"Those are two very possible suggestions," the Doctor said as he held on to Robin. The fascination had disappeared from his eyes, now all that remained inside of them was worry, but he continued his explanation without pause. "The Vikings believed in a hierarchy of Norse Gods and heroes. They considered themselves to be constantly watched by the one eyed god Odin and whenever they went onto the battle field they aimed to do him proud so that they might win his favor and be deemed worthy of entering Valhalla. So perhaps the warriors have got it into their heads that there is some sort of deadline they have to reach."<br/><br/>"Sounds silly to me. There's no glory in battle. It's just murder for the sake of murder," the Doctor spoke before letting go of Robin's shoulders and frowning. "But never mind that right now. What do you hear inside your head Robin?" The Doctor asked before raising his hands to her temple and lightly pressing his fingers to the sides of her head. "Why do you keep staring into space every now and then? What's going on inside your head that keeps on making you space out without you realising it?"