Secret of London #15 is the odd one out: its disc is not in a music box out in the boroughs but inside Michel Reuge's vault itself. Unlike the other 31 discs, it comes with no verse in the game.
The Aegis (Evie)
The Aegis is Minerva's armour from the First Civilization, and Evie Frye can wear it once all 32 Secrets of London discs open Michel Reuge's vault. It cuts melee and ranged damage taken by 20% and adds 20% cane-sword damage.