The Whispering Skull in the design of Polina Dr. Graf

My name is Lucy Carlyle and I work at the agency "Lockwood & Co." There are only three of us: me, Anthony (also known as Lockwood), and George. We catch ghosts and save London from them. Actually, it sounds simple, but in reality, it's much more complicated. There are a vast number of ghosts and their varieties, and most of them are deadly, and even our super weapons: rapiers, iron chains, and jars of Greek fire - are not always effective. However, there are no cowards in our agency.
It seems that our assignments are becoming more difficult each time. In one of the graves we had to open, an ancient bone mirror was discovered, possessing monstrous power. Everyone who has ever looked into it died in terrible agony. It is said that it was created by a maddened necromancer from real human bones. Brrr! Better not to think about it. Now, me, Lockwood, and George have to not only solve this deadly mystery but also resist the temptation to look into the terrifying mirror, which seems to have a will of its own... In short, another case for crazy agents!