"You're right, Ambrose! You're right!" cried Master Nathaniel. And off they went at a sharp jog trot, out at the gate, down the hill, and into the sleeping town.

They had no difficulty in rousing Mumchance and in firing him with their own enthusiasm. As they told him in a few hurried words what they had discovered, his respect for the Senate went up in leaps and bounds—though he could scarcely credit his ears when he learned of the part played in the evening's transactions by Endymion Leer.

"To think of that! To think of that!" he kept repeating, "and me who's always been so friendly with the Doctor, too!"

As a matter of fact, Endymion Leer had for some months been the recipient of Mumchance's complaints with regard to the slackness and inefficiency of the Senate; and, in his turn, had succeeded in infecting the good Captain's mind with sinister suspicions against Master Nathaniel. And there was a twinge of conscience for disloyalty to his master, the Mayor, behind the respectful heartiness of his tones as he cried, "Very good, your Worship. It's Green and Juniper what are on duty tonight. I'll go and fetch them from the guard-room, and we should be able to settle the rascals nicely."

As the clocks in Lud-in-the-Mist were striking midnight the five of them were stepping cautiously along the corridors of the Guildhall. They had no difficulty in finding the hollow panel, and having pressed the spring, they made their way along the secret passage.

"Ambrose!" whispered Master Nathaniel flurriedly, "what was it exactly that I said that turned out to be the pass-word? What with the excitement and all I've clean forgotten it."

Master Ambrose shook his head. "I haven't the slightest idea," he whispered back. "To tell you the truth, I couldn't make out what she meant about your having used a pass-word. All I can remember your saying was 'Toasted Cheese!' or 'Busty Bridget!'—or something equally elegant."

Now they had got to the door, locked from the inside as before.

"Look here, Mumchance," said Master Nathaniel, ruefully, "we can't remember the pass-word, and they won't open without it."

Mumchance smiled indulgently, "Your Worship need not worry about the pass-word," he said. "I expect we'll be able to find another that will do as well ... eh, Green and Juniper? But perhaps first—just to be in order—your Worship would knock and command them to open."