I nodded.

"In the first time-line," Golfin said, "the one I started out to

investigate, you were actually killed. I know now how it happened. You

see, Sarah Fish is a blackmailer. George Wile was one of her victims.

To get out of her clutches he had planned on killing her. It was a

perfect setup for him. Several of her blackmail victims were there.

All he had to do was stick her with the poisoned needle and sit back.

Nothing could be pinned on him. Motive? A dozen of those present had

equal motives.

"But you were there. A pickpocket. You lifted his wallet. He wouldn't

have felt your light touch ordinarily, but he was acutely conscious of

those spare poisoned needles. He had one in his fingers. Within a few

moments Sarah would have been killed. You changed things. He killed you

instead, and in the excitement stole back his wallet. And of course he

didn't go through with his original plan to kill Sarah Fish. And also

of course, the police never solved your murder. That's why I chose it

in my first attempt to change the past. It was an ideal mystery. I

could solve it and at the same time save your life.

"I went into the past and watched your every move. But George Wile was

too smart. Even watching I couldn't find out who had done it. So I went

back into the past again and began my great experiment, _an attempt to

alter what has already happened_.

"I succeeded--but not the way I had hoped. There is an inertia to

events. That inertia in events made you steal his wallet the second

time--and plant your own on him. You left before he discovered the

switch. He came after you to kill you here. It was then you gave me the

identity of your killer. After that I went back to my original point

again. At the proper time I did what you had done. I picked George

Wile's pocket. He felt me do it. Again--the inertia of events--he

tried to stick me with the poisoned needle. But I was ready for him. I

deflected his hand and shoved. He stuck himself."

* * * * *

Golfin grinned. "Sure I planted your wallet on him. But who can say

whether it was my own free will or the inertia of events that made me

do it? The morning papers will carry the story exactly the same as it

was in the first time-line. A tremendous inertia of a single event."

"But what about me?" I said wildly. "The police will check. They'll

know he isn't me."

Golfin shrugged. "I doubt it," he said. "My guess is that Sarah will

identify him as you and keep quiet. To protect her racket, George

will be buried as Ben Smith. George Wile's relatives will report him

missing. He'll never be found. 'Your' murder will remain unsolved."

"I'm getting out anyway," I said. "I don't want to chance it."

"Then why not come with me?" Golfin said. "Now that I know I can change

the past I'm going to start doing it in earnest."

"Go with you?" I said.

"You could work for me," Golfin said persuasively. "I would pay you

far more than you average picking pockets, and it would be far more

exciting work."

"Say...." I said thoughtfully. "That's not a bad idea. I guess I owe

you something, too, for saving my life." I nodded. "Okay. But where do

we go?"

"Not where," Sam Golfin said. "To when. We're going to my present--a

future year not too far removed from 1954."

He took out his hypodermic gadget and came toward me. I retreated

a step, then stood still, the palms of my hands suddenly wet with

perspiration.

"Good boy," he said. "It won't hurt much."

* * * * *

I went into the drugstore and up to the cigar counter. "A pack of

Camels," I said to the cashier. I took out a three dollar bill and

handed it to him as he slid the pack toward me.

"Fifty cents out of three dollars," he said absently.

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