"Was the door of the alley leading to the back open or shut?"
"I don't know--I never noticed."
"After Villiers disappeared, you went home?"
"I did--straight home."
Naball pondered for a few moments. Stewart certainly told all he knew with perfect frankness, but then was he telling the truth?
"Do you want to ask me any more questions?" asked Keith, rising.
Naball made up his mind, and spoke out roughly,--
"I want to know how you, with a small salary, can afford to belong to an expensive club like the 'Skylarks?'"
Keith's face grew as black as thunder.
"Who the devil gave you permission to pry into my private affairs?"