"They know"

When Ken Hughes spins a tale of magic, buckle up.

The master of illusion magic walks the city unseen. All his life, towering gates and sharp-eyed guards have melted away before the disguises and identities that Nick weaves... but now he needs to do more than disappear. Now he has a whole city to search, for the men who kidnapped his sister.

If you want to know just how dangerous the path of the Mirrorman can be, look into A Darker Glass.