Unless your a serial killer
I think the shell is just a play on words for attaining the treasure purl within. Or, im fucking crazy.
To travel in silence by a long and secuatis route, to brave the arrows of misfortune, and fear nither noose nor fire, to play the greatest of all games and win, forgoing no expense is to mock the visitudes of fate and gain at last the key, that will unlock the ninth gate.