A Connecticut Yankee in King Arthurs Court by Mark Twain Chapter 30 Page 17

“But the people arrived in time to save the family; how is it they could save none of the prisoners?”

The man looked puzzled, and said:

“Would one unlock the vaults at such a time?

Marry, some would have escaped.”

“Then you mean that nobody did unlock them?”

“None went near them, either to lock or unlock. It standeth to reason that the bolts were fast; wherefore it was only needful to establish a watch, so that if any broke the bonds he might not escape, but be taken. None were taken.”

“Natheless, three did escape,” said the king, “and ye will do well to publish it and set justice upon their track, for these murthered the baron and fired the house.”