“Do you know that it was her apartment?”

“Well — well, not exactly, but it must have been, Donald.”

I said, “Tomorrow, after things have quieted down, we’ll go up to that apartment house. You come out of the elevator. I’ll stand in the doorway of apartment 309 and step out into the corridor just as you leave the elevator. Then we’ll try it with the other two doorways.”

She squinted her eyes thoughtfully and said, “Yes, it might work. Perhaps Mr. Ellis would like to have me do that for him.”

“Who’s Ellis?”

“Larchmont Ellis, the deputy district attorney.”

“No. He won’t want you to do that for him until after he’s talked with you a couple of times more. By that time, you’ll be positive the man was coming out of 309. Then he’ll put on the demonstration to clinch it in your mind.”

She said, “He wouldn’t do anything like that. He wants to be fair. He’s a very nice young man.”

I said, “Yeah, I know.”

The waiter brought on our meat course, and after he had left, she said, “Donald, I’ve got to get a room.”