“Then the safe in the lower flat belongs to Karr?”
“Yes.”
“Why didn’t he keep that safe in the upper flat?”
“Probably because Johns Blaine keeps an eye on the safe, and sleeps in the lower flat.”
“Then this housekeeper, Sarah Perlin, must have known.”
“Of course.”
“And Opal Sunley.”
“Not necessarily,” Mason said. “She may or may not have known. It doesn’t make a great deal of difference. The housekeeper lived there. Opal Sunley came by the day.”
“But you say Hocksley was wounded. Then if Hocksley is Karr, Karr must have a bullet hole...”
“In his leg,” Mason interpolated. “That’s why he’s keeping his legs covered, so the bandage won’t show.”