He led Murgatroyd to the end of the street, where stood a corner tavern, into a side-door of which Pratt turned as if he were well acquainted with the geography of the place. Walking down a narrow passage he conducted his companion into a small parlour, at that moment untenanted, pointed him to a seat in the corner, and rang the bell. Five minutes later, having provided Murgatroyd with rum and water and a cigar, he turned on him with a direct question.

"Look here!" he said in a low voice. "Would a hundred pounds be any use to you?"

Murgatroyd's cheeks flushed.

"It 'ud be a fortune!" he answered with fervour. "A hundred pound! Lor' bless you, Mr. Pratt, it's many a year since I saw a hundred pound—of my own—all in one lump!"

Pratt pulled out his roll of bank-notes, fluttered it in his companion's face, laid it on the table, and set an ashtray on it.

"There's a hundred pounds there!" he said, "It's yours to pick up—if you'll do a little job for me. Easy job, too!—you'll never earn a hundred pounds so easy in your life!"

Murgatroyd pricked up his ears. According to his ideas, money easily come by was seldom honestly earned. He stirred uncomfortably in his seat.

"So long as it's a straight job," he muttered. "I don't want——"

"Straight enough—as straight as it's easy," answered Pratt. "It may seem a bit mysterious, but there's reasons for that. I give you my word it's all right—all a mere bit of diplomacy—and that nobody'll ever know you're in it—that is, beyond a certain stage—and that there's no danger to you."

"What is it?" asked Murgatroyd, still uneasy and doubtful.