There wasn't much old Doc didn't know or couldn't do.

Her eldest brother had been retarded, and Doc knew she was sensitive about it.

Even Doc didn't know the codes that were needed to control destinations.

Doc, you know it's light out at this hour.

Doc didn't know when he first became aware that something was going on that concerned him.

Doc didn't know who or how many were coming to his party.

If the Doc knew he was in danger he showed no sign.

Doc knew these men never had seen their chief, the man called Var.

Maybe Doc would know who'd lost a knife like that one, and could get it back to its rightful owner.

Doc knows Eddie, and understood that he wasn't asking about the climate.