“The ring, man, the ring: that was what he came back for. If we have no other way of catching him, we can always bait our line with the ring. I shall have him, Doctor—I’ll lay you two to one that I have him.
I must thank you for it all. I might not have gone but for you, and so have missed the finest study I ever came across: a study in scarlet, eh? Why shouldn’t we use a little art jargon.”
A Study In Scarlet, Arthur Conan Doyle