The bane Chronicles – Cassandra Clare

It is not easy being Magnus Bane. As a warlock, he's often called upon to fix the problems of others. His life has been long, and his loves have been many. And Magnus has a way of making sure he's in the right place at the right - or perhaps wrong - time. The French Revolution, Prohibition, the first great battle between Valentine and the New York Institute...

Magnus was there, and usually in the middle of it. Magnus will never be able to tell all of his tales. No one would believe him. But these eleven stories shed a little light on his often inscrutable character.

They are stories he probably wishes had never got out.