“Is it a man or a woman?”
“The Brown Robin, I should judge, is a name used by a man and a woman, working together.”
A faint smile flitted over the face of the lady.
There was a moment’s silence. Then Nick asked:
“How did these letters get into the possession of the Brown Robin?”
“They were stolen from Mr. Collins.”
“The man to whom they were written?”
“Yes.”
“By whom?”
“By the Brown Robin, I suppose.”