The Ring of Kafrene? The Doctor focuses hard on his memory bank. Kafrene! Has he been to a Kafrene? During this time, The Doctor seems to be giving off a golden glow. Fourteen pulls his face, he can't pin-point a Kafrene.

"Yeah. Sorry, not ringing any bells and I'm a bit well-traveled. She needs to recharge. Bit of a crash landing. Should be find in about 12 hours."

The Doctor, on the other hand, doesn't look so well. If anything looks like he might throw up.