Nevertheless, she felt she would give a good deal to overhear what was going on.  Possibly, if anything unforeseen had happened, she might get news of Tommy.  For some moments she reflected desperately, then her face brightened.  She went quickly along the passage to Mrs. Vandemeyer’s bedroom, which had long French windows leading on to a balcony that ran the length of the flat.  Slipping quickly through the window, Tuppence crept noiselessly along till she reached the boudoir window.  As she had thought it stood a little ajar, and the voices within were plainly audible.

Tuppence listened attentively, but there was no mention of anything that could be twisted to apply to Tommy.  Mrs. Vandemeyer and the Russian seemed to be at variance over some matter, and finally the latter exclaimed bitterly: 

“With your persistent recklessness, you will end by ruining us!”

“Bah!” laughed the woman.  “Notoriety of the right kind is the best way of disarming suspicion.  You will realize that one of these days—­perhaps sooner than you think!”

“In the meantime, you are going about everywhere with Peel Edgerton.  Not only is he, perhaps, the most celebrated K.C. in England, but his special hobby is criminology!  It is madness!”

“I know that his eloquence has saved untold men from the gallows,” said Mrs. Vandemeyer calmly.  “What of it?  I may need his assistance in that line myself some day.  If so, how fortunate to have such a friend at court—­or perhaps it would be more to the point to say in court.”

Boris got up and began striding up and down.  He was very excited.

“You are a clever woman, Rita; but you are also a fool!  Be guided by me, and give up Peel Edgerton.”

Mrs. Vandemeyer shook her head gently.

“I think not.”

“You refuse?” There was an ugly ring in the Russian’s voice.

“I do.”

“Then, by Heaven,” snarled the Russian, “we will see——­” But Mrs. Vandemeyer also rose to her feet, her eyes flashing.

“You forget, Boris,” she said.  “I am accountable to no one.  I take my orders only from—­Mr. Brown.”

The other threw up his hands in despair.

“You are impossible,” he muttered.  “Impossible!  Already it may be too late.  They say Peel Edgerton can smell a criminal!  How do we know what is at the bottom of his sudden interest in you?  Perhaps even now his suspicions are aroused.  He guesses——­”

Mrs. Vandemeyer eyed him scornfully.

“Reassure yourself, my dear Boris.  He suspects nothing.  With less than your usual chivalry, you seem to forget that I am commonly accounted a beautiful woman.  I assure you that is all that interests Peel Edgerton.”

Boris shook his head doubtfully.

“He has studied crime as no other man in this kingdom has studied it.  Do you fancy that you can deceive him?”

Mrs. Vandemeyer’s eyes narrowed.