"Do you know how that deadly poison was injected into the poor woman's system?
By the simplest of all means, one known to every scoundrel in Southern Europe.

A ring--yes! a ring, which has a tiny hollow needle capable of holding a sufficient quantity of prussic acid to have killed two persons instead of one.

The man in the tweed suit shook hands with his fair companion--probably she hardly felt the prick, not sufficiently in any case to make her utter a scream.

And, mind you, the scoundrel had every facility, through his friendship with Mr.
Errington, of procuring what poison he required, not to mention his friend's visiting card.

We cannot gauge how many months ago he began to try and copy Frank Errington in his style of dress, the cut of his moustache, his general appearance, making the change probably so gradual, that no one in his own _entourage_ would notice it.