A Gathering of Shadows by VE Schwab
"And then in the silence, he heard a sound: not a sob, or a scream, but a laugh." In the first book, there are 4 Londons, located in four parallel universes. Kell who lives in Red London, is a powerful magician who can travel between realms. Lila Bard is a common thief in Grey London, a magicless London. There's Black London, the doomed London. And there's a White London, the London trapped between life and death. If book one was Kell's story, then consider this the Lila Bard show. She joins the crew of Captain Alucard Emery, privateer, and runs amok on Red London's high seas, finally fulfilling her dream of becoming a pirate. She's content to be the best thief, until she hears about a dangerous game being played in Red London, and Lila doesn't love anything more than she loves danger. Kell is now the one yearning for freedom, as he becomes trapped between the family he won't ever be a part of and his societal obligations. The setting is fabulous. ...