There was one hash slinger behind the counter and five customers scattered along on the stools. I picked a stool that left me elbow room, sat, and ordered ice cream and coffee. That made me slightly conspicuous in those surroundings, but I refused to insult Fritz’s roast duck, which I could still taste. The counterman served me and I took my time. At 8:12 the ice cream was gone and my cup empty, and I ordered a refill. I had about got to the end of that too when a male entered, looked along the line, came straight to me, and asked me what my name was. I told him, and he handed me a folded piece of paper and turned to go.

He was barely old enough for high school, and I made no effort to hold him, thinking that the bird I had a date with was not likely to be an absolute sap. Unfolding the paper, I saw neatly printed in pencil:

Go to your car and get a note under the windshield wiper. Sit in the car to read it.

I paid what I owed, walked to my car and got the note as I was told, unlocked the car and got in, turned on the light, and read in the same print:

Make no signal of any kind. Follow instructions precisely. Turn right on 11th Ave. and go slowly to 56th St. Turn right on 56th and go to 9th Ave. Turn right on 9th Ave. Right again on 45th. Left on 11th Ave. Left on 38th. Right on 7th Ave. Right on 27th St. Park on 27th between 9th and 10th Aves. Go to No. 814 and tap five times on the door. Give the man who opens the door this note and the other one. He will tell you where to go.

I didn’t like it much, but I had to admit it was a handy arrangement for seeing to it that I went to the conference unattached or there wouldn’t be any conference. It had now decided to rain. Starting the engine, I could see dimly through the misty window that Saul’s taxi driver was still monkeying with his carburetor, but of course I had to resist the impulse to crank the window down to wave so long. Keeping the instructions in my left hand, I rolled to the corner, waited for the light to change, and turned right on Eleventh Avenue. Since I had not been forbidden to keep my eyes open I did so, and as I stopped at Fifty-second for the red light I saw a black or dark blue sedan pull away from the curb behind me and creep in my direction. I took it for granted that that was my chaperon, but even so I followed directions and kept to a crawl until I reached Fifty-sixth and turned right.

In spite of all the twistings and turnings and the lights we had to stop at, I didn’t get the license number of the black sedan for certain until the halt at Thirty-eighth Street and Seventh Avenue. Not that that raised my pulse any, license plates not being welded on, but what the hell, I was a detective, wasn’t I? It was at that same corner, seeing a flatfoot on the sidewalk, that I had half a notion to jump out, summon him, and tackle the driver of the sedan. If it was the strangler, I had the two printed notes in my possession, and I could at least have made it stick enough for an escorted trip to the Fourteenth Precinct Station for a chat. I voted it down, and was soon glad of it.

The guy in the sedan was not the strangler, as I soon learned. On Twenty-seventh Street there was space smack in front of Number 814 and I saw no reason why I shouldn’t use it. The sedan went to the curb right behind me. After locking my car I stood on the sidewalk a moment, but my chaperon just sat tight, so I kept to the instructions, mounted the steps to the stoop of the run-down old brownstone, entered the vestibule, and knocked five times on the door. Through the glass panel the dimly lit hall looked empty. As I peered in, thinking I would either have to knock a lot louder or ignore instructions and ring the bell, I heard footsteps behind and turned. It was my chaperon.

“Well, we got here,” I said cheerfully.

“You damn near lost me at one light,” he said accusingly. “Give me them notes.”