“A door free the landing opens upon the fairst room, a door free a passage opens upon the second. Where does yon passage lead?”
“From the main stair along beside Kazmah’s rooms to a small back stair. This back stair goes from top to bottom of the building, from the end of the same hallway as the main stair.”
“There is na either way out but by the front door?”
“No.”
“Then if the evidence o’ the Spinker man is above suspeecion, Mrs. Irvin and this Kazmah were still on the premises when ye arrived?”
“Exactly. I gathered that much at Vine Street before I went on to Bond Street. The whole block was surrounded five minutes after my arrival, and it still is.”
“What ither offices are in this passage?”
“None. It’s a blank wall on the left, and one door on the right—the one opening into the Kazmah office. There are other premises on the same floor, but they are across the landing.”
“What premises?”
“A solicitor and a commission agent.”