en he did it； and that if the District Attorney will take a plea of manslaughter they'll be just as well satisfied。 And then I'm going to want some of the gravy。〃
〃You mean；〃 said Mason； 〃that you want Frances Celane to see that you get paid to plead Pete Devoe guilty of manslaughter so as to hush up any scandal？ Is that what you're trying to convey to me？〃
Blackman got to his feet with ponderous dignity。
〃I think； counselor；〃 he said； 〃that you understand my errand perfectly。 I think that I have stated my position fairly and frankly； and I do not care to mit myself by replying to the rather crude summary which you have attempted to make。〃
Perry Mason pushed back the chair from his desk； stood with his feet planted well apart； his eyes staring at Blackman。
〃Don't think you can pull anything like that； Blackman；〃 he said。 〃We're here alone。 You're going to tell me what you want； and tell it in so many words。〃
〃Don't be silly；〃 Blackman told him。 〃You know what I want。〃
〃What do you want？〃
〃I want money。〃
〃What are you going to give in return for it？〃
〃I'll cooperate with you in keeping Miss Celane in the background。〃
〃To the extent that you'll have Pete Devoe plead guilty to manslaughter？〃
〃Yes。 If I can get a plea。〃
〃Is he guilty of manslaughter？〃 asked Perry Mason。
〃Why the hell bother about that？〃 said Blackman irritably。 〃I told you that he'd plead guilty to manslaughter。〃
〃How much money do you want？〃
〃I want fifty thousand dollars。〃
〃That's too much money for a fee；〃 Mason remarked； in a voice that was almost casual。
〃Not for the work I'm going to do it isn't。〃
〃The work for Devoe？〃 asked Mason。
〃The work for Frances Celane； if you want to put it that way；〃 Blackman told him。
〃All right；〃 Mason went on； 〃as you； yourself； expressed it； we're here alone。 There's no reason why we can't talk frankly。 Did Pete Devoe kill Edward Norton？〃
〃You ought to know；〃 said Blackman。
〃Why should I know？〃
〃Because you should。〃
〃I don't know。 I'm asking you if he did。〃
〃Why worry about that？ I'll get him to plead guilty to manslaughter。〃
〃For fifty thousand dollars？〃
〃For fifty thousand dollars。〃
〃You're crazy。 The District Attorney wouldn't accept any such plea。 This is a murder case。 Second degree murder would be the best you could get。〃
〃I could get manslaughter；〃 Blackman said； 〃if the family would cooperate； and if Graves would change his story a little bit。〃
〃Why should Graves change his story？〃 Mason inquired。
〃Why should anybody do anything？〃 Blackman asked in a sarcastic tone of voice。 〃Why should I do anything？ Why should you do anything？ We're not mixed in it。 We're doing things for money too。〃
Slowly； almost ponderously； Perry Mason walked around the big desk toward Blackman。 Blackman watched him with greedy eyes。
〃Just say it's all right；〃 said Blackman； 〃and you won't hear anything more about it。〃
Perry Mason came to a stop in front of Blackman。 He looked at him with eyes that were cold and sneering。
〃You dirty scum；〃 he said； his voice vibrant with feeling。
Blackman recoiled slightly。 〃What the hell are you talking about？〃
〃You；〃 said Mason。
〃You've got no right to talk to me like that。〃
Perry Mason took a swift step forward。
〃A dirty shyster；〃 he said； 〃who would sell out his client for a fifty thousand dollar fee。 Get out of this office； and do it right now！〃
Blackman's face twisted in surprise。
〃Why；〃 he said； 〃I thought you were going to listen to my proposition。〃
〃I listened to it；〃 Mason told him； 〃and heard all I wanted to。〃
Blackman suddenly bolstered up his courage； and brandished a rigid forefinger in front of Mason's face。
〃You're mixed in this thing pretty deep yourself；〃 he said。 〃You're either going to accept this proposition； or you're going to hear a lot more about it。〃
Perry Mason reached up and grasped the extended forefinger in his left hand。 He twisted the other's hand down and around； until the lawyer exclaimed with pain。 Mason abruptly released the forefinger； spun the other lawyer halfway around； grasped the back of the lawyer's coat with his big； capable hand； and propelled the lawyer to the door。 He jerked open the door of the private office； gave Blackman a shove that sent him sprawling off balance； into the outer office。
〃Get out； and stay out！〃 he said。
Blackman almost ran for half the distance across the outer office； then turned； with his face livid with rage； his glasses dangling at the end of the black ribbon。
〃You're going to regret that；〃 he said； 〃more than anything you ever did in your life！〃
〃Get out！〃 said Perry Mason； in a slow； even tone of voice； 〃or I'm going to do some more。〃
Blackman groped for the knob of the outer door； pulled it open； and stepped into the corridor。
Perry Mason stood in the doorway of his private office； shoulders squared； feet planted widely apart； staring belligerently at the slowly closing door。
〃What happened？〃 asked Della Street； in sudden concern。
〃I told the cheap heel where to get off；〃 Mason remarked； without looking at her； his cold eyes still fastened on the door from the outer office。
He turned and walked back to his private office； leaving Della Street staring at him with wide； apprehensive eyes。
The telephone was ringing as he reached his desk。 He scooped the receiver to his ear； and heard the voice of Frances Celane。
〃I've got to see you at once；〃 she said。
〃All right；〃 he told her； 〃I'm in my office。 Can you e in？〃
〃Yes； unless you can e out here。〃
〃Where are you？〃
〃Out at the house。〃
〃All right；〃 he told her； 〃you'd better get in that Buick and e in here。〃
〃I can't e in the Buick；〃 she said。
〃Why not？〃 he asked。
〃The police have sealed it up。 They've locked the transmission and padlocked the wheels。〃
Perry Mason gave a low whistle over the telephone。
〃In that event；〃 he said； 〃you'd better get in the Packard and e here just as fast as you can。 You'd better grab a suitcase and put some clothes in it； but do it without attracting too much attention。〃
〃I'll be in in twenty minutes；〃 she said； and hung up。
Perry Mason put on his hat； and paused for a moment to talk with Della Street as he went out。
〃I'm expecting Miss Celane in here；〃 he said； 〃in about twenty or twenty…five minutes； and I think I'll be back by the time she arrives。 But if I'm not； I want you to put her in my private office and lock the door。 Don't let anyone in。 Do you understand？〃
She looked up at him； swiftly apprehensive； and nodded her head in a gesture of affirmation。 〃Has anything gone wrong？〃 she asked。
He nodded curtly； then smiled and patted her shoulder。
He walked out of the door； took the elevator down； and walked a block and a half to the Seaboard Second National Trust pany。
B。W。 Rayburn； vice president of the bank； regarded Perry Mason with hard； watchful eyes； and said： 〃Yes； Mr。 Mason？〃
〃I'm representing Miss Frances Celane； the beneficiary under a trust fund which was administered by Edward Norton；〃 said Mason。 〃Also； I'm representing Mr。 Arthur Crinston； who is the surviving partner of Crinston & Norton。〃
〃Yes；〃 said Mr。 Rayburn。 〃So I understand from a conversation I had this morning with Mr。 Crinston。〃
〃On the day of his death；〃 said Mason； 〃Mr。 Norton made a trip from his home to a bank and back again。 I am wondering if the trip was to this bank； or to the Farmers and Merchants National； where I understand he also had an account。〃
〃No；〃 said Rayburn slowly； 〃he came here。 Why do you ask？〃
〃I understand；〃 said Mason； 〃he came here to secure a large sum of money in one thousand dollar bills。 I am anxious to know if there was anything peculiar about his request for that money； or anything peculiar about the bills。〃
〃Perhaps；〃 said Rayburn significantly； 〃if you could be a little more explicit； I could give you the information you wanted。〃
〃Did Mr。 Norton；〃 asked the lawyer； 〃say specifically for what purpose he wanted those bills？〃
〃Not specifically；〃 said Rayburn； with the secretive manner of one who is determined only to answer direct questions。
Mason took a deep breath。
〃Did he ask you in advance；〃 he said； 〃to get for him a certain number of thousand dollar bills bearing consecutive serial numbers？〃
〃He did；〃 said the vice president of the bank。
〃And did he further state to you that； through your banking affiliations； he would like very much to have you make note of the numbers of those bills and ascertain when the bills were presented for deposit at any bank in the city？〃
〃Not exactly in those words；〃 said Rayburn cautiously。
〃Did he state that he intended to use that money to make a payment to a blackmailer； and would like to find out the identity of the person who deposite