A Matter of Millions (Unabridged‪)‬

Anna Katharine Green, the "mother of the detective novel", was a prolific American author who wrote well-plotted, legally accurate tales. The sixth installment in the Mr. Gryce series, this is a stand-alone mystery concerning a series of mistaken identities and one very large sum of money. 

Several girls, all bearing the name "Jenny Rogers", are being killed in the city of New York. In the middle of it, there are two suspects: a famous painter and a visiting stranger, who also happen to bear, in their turn, identical names. Behind it all, the dying wishes of a man and a nefarious plot to lay claim to a matter of millions.