«Call me--or if I'm not available, Paul Drake-as soon as you can get to a phone. Let us know what the man wants.»

«I'm to let him think I'm willing to play along?»

«That's right. And if you are asked to do any typing, use new carbons with each sheet of paper.»

«It won't be dangerous?»

«I don't think so at the moment. Not if you don't let on you know who lie really is, and if you manage to stall him long enough to get to a phone. Later on we may have to take precautions.»

«All right,» she promised, «I'll try.»

«Good girl,» Mason said. «Go on home now and phone me if anything happens.»

Her laugh was nervous. «Don't worry,» she said, «the very first thing that occurs out of the ordinary, I'm going to dash to a telephone.»

«That's right,» Mason told her. «Get Paul Drake on the line if you can't get me. His office is open twenty-four hours a day.»

Della Street held the exit door open for her.

«Just be careful,» Mason warned, «not to let this chauffeur know that you have any idea who he is. Be naive, but let him feel that if he has any proposition to make you could be tempted.»

Virginia Baxter flashed him a smile and left the office.

Della Street gently closed the door.

«You think this chauffeur is going to be back?» Drake asked.

«If he didn't get what he wanted,» Mason said, «he'll be back. We have two people looking for a paper, and since the paper that we think they're looking for doesn't seem to be in the files, the probabilities are that one of them has already found it. Therefore, the other will be back.»

«Just how significant is all of this?» Drake asked.

«I'll tell you,» Mason said, «when we get the samples of hair and fingernails from Lauretta Trent. A person can't rely on a copy of the will unless two things have happened.»

«What two things?» Drake asked.

«First, the original will is missing. Second, the person who executed it is dead.»

«You think it's that serious?» Drake asked.

«I think it's that serious,» Mason said, «but my hands are tied until we get a check on that arsenic factor.

«Go back to your office, Paul, alert your telephone operator and have things in readiness so that you can have a man out at Virginia Baxter's place at a moment's notice.»

The man with the black hair, the close-clipped mustache and the black, intense eyes was waiting in a car that was parked in front of Virginia Baxter's apartment house.

Virginia spotted the car first, recognized the driver sitting there concentrating on the front door of the apartment house and breezed on by without attracting any attention.

From a service station four blocks down the street, she telephoned Mason's office.

«He's out there, waiting,» she said, when she had the lawyer on the line.

«The same man who called on you before?» Mason asked.

«Yes.»

«All right,» Mason said, «go on home; see what he wants; make an excuse to break away if you can and call me.»

«Will do,» she said. «You'll probably hear from me within the next twenty or thirty minutes.»

She hung up the phone, drove back to her apartment house, parked her car and entered the front door, apparently completely oblivious of the man who was seated in the parked automobile across the street.

Within a matter of minutes after she had entered her apartment house, the buzzer sounded.

She saw to it that the safety chain was on the door, then opened it to confront the intense, black eyes.

«Why, hello, Mr. Menard,» she said. «Did you find what you wanted?»

The man tried to make his smile affable. «I'd like to talk with you about it. May I come in?»

She hesitated a brief instant, then said cordially, «Why, certainly,» and released the chain on the door.

He entered the apartment, seated himself, said, «I'm going to put my cards on the table.»

She raised her eyebrows.

«I wasn't looking for an agreement made with Smith and relating to the sale of a machine shop,» he said. «I was looking for something else.»

«Can you tell me what?» she asked.

«Some years ago,» he said, «Mr. Bannock made at least one will for Lauretta Trent. I'm under the impression he made two wills.

«Now then, for reasons that I don't want to take the time to go into at the present time, it is highly important that we find those wills. At least, the latest one.»

Virginia let her face show surprise. «But-but I don't understand… Why, we only had the carbon copies. Mrs. Trent would have the original wills in her safety deposit box or somewhere.»

«Not necessarily,» he said.

«But what good would a copy do?»

«There are other people who are interested.»

She raised her eyebrows.

«There is one person in particular who is willing to do anything to get his hands on a copy of the will. Now, I would like to lay a trap for that individual.»

«How?»

«I believe you purchased the typewriter that you had used in the office?»

«Yes. That is, Mr. Bannock's brother gave it to me.»

He indicated the typewriter on the desk. «It's an older model?»

«Yes. We had it in the office for years. It's an exceedingly durable make and this model is pretty well dated. When the appraiser appraised the office furniture he put a very low value on this typewriter because it was so old, and Mr. Bannock's brother told me to just keep it and forget about it.»

«Then you could prepare a carbon copy of a will and date it back three or four years and we could mix that carbon copy in with the old papers that went to Mr. Bannock's brother and if anyone should happen to be snooping around through those papers looking for a copy of Lauretta Trent's will, we could fool him into relying on that copy and perhaps get him to betray himself.»

«Would that do any good?» she asked.

«It might do a great deal of good… I take it you'd like to help a person who was a client of Mr. Bannock's?»

Her face lit up. «Then you mean Lauretta Trent would ask me to do this herself?»

«No, there are certain reasons why Lauretta Trent couldn't request you to do it, but I can tell you it would be very much to her advantage.»

«You're connected with her then in some way?»

«I am speaking for her.»

«Would it be all right for me to ask the nature of the association or of your representation?»

He smiled and shook his head. «Under some circumstances,» he said, «money talks.»

He took a wallet from his pocket and extracted a hundred-dollar bill. He paused for a moment; then extracted another hundred-dollar bill. Then, significantly, another hundred-dollar bill and kept on until there were five one-hundred-dollar bills lying on the table.

She eyed the money thoughtfully, «We'd have to be rather careful,» she said. «You know Mr. Bannock used stationery that had his name printed in the lower left-hand corner.»

«I hadn't realized that,» the man said.

«Fortunately, I have some of that stationery-Of course, we'd have to destroy the original and leave this as a carbon copy.»

«I think you could make a good job of it,» he said.

She said, «I'd have to have your assurance that it was all right, that there wasn't going to be anything fradulent connected with it.»

«Oh, certainly,» he said. «It's simply to trap someone who is trying to make trouble with Mrs. Trent's relatives.»

She hesitated for a moment. «Could I have some time to think this over?»

«I'm afraid not, Mrs. Baxter. We're working against time and if you're going to go ahead with this we'd have to do it immediately.»

«What do you mean by 'immediately'?»

«Right now,» he said, indicating the typewriter.

«What do you want in this will?»

He said, «You make the usual statements about the testatrix being of sound and disposing mind and memory and state that she is a widow; that she has no children; that she has two sisters who are married; that one is Dianne, the wife of Boring Briggs; that the other is Maxine who is the wife of Gordon Kelvin.