I have little doubt that, at that moment, Wilson was in greater danger than during his struggle with Shears in the shrubbery. Shears felt a fierce longing to wring his neck. Mastering himself with an effort, he gave a grin that pretended to be a smile and said:

"Well done, well done, that's an excellent piece of work; most useful. Have your wonderful powers of analysis and observation been exercised in any other direction? I may as well make use of the results obtained."

"No; that's all I did."

"What a pity! The start was so promising! Well, as things are, there is nothing left for us to do but go."

"Go? But how?"

"The way respectable people usually go: through the gate."

"It's locked."

"We must get it opened."

"Whom by?"

"Would you mind calling those two policemen walking down the avenue?"