out with a sharpness that made Curwen jump. If a turtle dove had snarled and bitten him, he would hardly have been more surprised.
Mr. Higstock was occupied with his client.
âMr. Stranack, I advise you to submit to detention under protest and leave the Inspector and myself to discuss the matter. If we fail to agree, I shall apply at once for a writ of habeas corpus and you may rest assured that my application is likely to be successful.â
âGood enough, Mr. Higstock! Many thanks! Inspector, I submit to detention under protest.â
Curwen dived into his own extensive experience and came up empty handed.
âI wished to get rid of my client,â simpered Higstock, as the door closed behind Benjoy and Stranack, âbecause it is necessary to admit that he mayâor may notâbe a liar. That does not affect the matter of conspiracy to murder.â
Mr. Higstock waited until Curwen had lowered his eyebrows.
âBefore a charge of conspiracy to murder can be sustained, you have to establish that the conspirators at least believed that it would be possible to commit the murder. I have evidenceâand no doubt you have tooâthat these young men did not, before nine oâclock last night, believe it possible to set out in that Ford and murder Mr. Brengast, for the simple reason that they believed him to be in Madrid. I have ascertained that no one knew that deceased was paying a literally flying visit to England, except the deceasedâs wife. Prove that they were in touch with Mrs. Brengast before that time, and you have your conspiracy. Not otherwise!â
Back to the Madrid story and that cutting from The Times! Curwen mastered his irritation.
âHalf a minute, Mr. Higstock! Iâm relying on the movements of the Ford car and the lies of the suspected persons.â
âIrrelevant to the charge of conspiracy!â pronounced Mr. Higstock. âYou have evidence that the lock was operated. You have no evidence that a fourth man was employed for that purpose. You are therefore compelled to accept their statement that the lock was operated by one of themselves.â
âBut what has the lock got to do with the murder?â demanded Curwen.
âOh, nothingânothing whatever! That is my point!â said the astonishing Mr. Higstock. âBut it has a very great deal to do with whom you arrest. For instance,â he went on, âif you arrest all three you will know for certain that you are arresting one wholly innocent man. You have at present no means of refuting the statements of any one of them that he is the wholly innocent man.â
Mr. Higstock allowed a pause for politeness before continuing:
âMay I respectfully suggest, Inspector, that you get in touch with your own legal department and tell them what I have said. I will write down the precedents for you. I hope you will. I really would like to avoid all the bother of getting that writ.â
Curwen grunted. Mr. Higstock thanked him profusely for the courteous forbearance shown to his client and himself.
âDonât think me unappreciative of your difficulties, Inspector. It must be very disturbing for you. You are accustomed to searching for the guilty. In this case you already have both guilty men under lock and key.â
Mr. Higstock bowed himself to the door, where he turned.
âButâstrictly between ourselves, Inspectorâyou will have to unlock those doors. You will have to let the guilty men go free until you have found the innocent man.â
Having dropped what he would doubtless have called a âveritable bombshellâ, Mr. Higstock slunk away.
Curwen caught Benjoyâs eye and grinned.
âVery well put, if you ask me! Find the Innocent Man. Thatâs a new one on me.â
âA purely verbal paradox, sir.â
âEh? Oh no, I wouldnât call him that! Heâs not a bad little bloke when you get to know him. Heâs a