"Let me go!" cried the man, struggling to get free. "Come into the house with me--quick, quick, or the murderers will escape!"

"You don't escape," said Applebee. "Keep still, or I'll knock you on the head." And he tightened his hand on the man's throat.

At this moment his summons for assistance was answered by the respectable mechanic who had twice inquired the way to Holborn. "What's up?" he inquired.

Applebee pulled out his bull's eye lamp, and turned its light upon the new arrival. "Oh, it's you," he said. "I call upon you in the Queen's name to assist me in arresting this man."

"Right you are," replied Lambert, in the half tipsy voice of the mechanic.

"Are you mad?" cried the man. "They will escape, I tell you! Come with me into that house!"

"Keep still!" growled Applebee, shaking his captive roughly.

"What do you charge him with?" asked Lambert, keeping up the fiction.

"Murder," said Applebee. "The murder of Samuel Boyd!"

"That's a find," said Lambert. "Let's have a look at him." And to the constable's astonishment he also pulled out a bull's-eye lamp.