I discovered this trilogy by V.E. Schwab on Goodreads and loved the cover treatments so decided to give the books a try.
About the series, from V.E. Schwab’s website: “A fantasy series that takes place in a series of parallel Londons—where magic thrives, starves, or lies forgotten, and follows the last of a line of blood mages and a pickpocket from Georgian London as they combine forces to save the worlds—all of them.”
A Darker Shade of Magic (#1 in the series) is a rollicking good time of a book about a blood magician named Kell, and a kick-ass heroine pickpocket named Delilah. They join forces to defeat those out to destroy Kell and the London he inhabits. Time/space travel, political intrigue and evil plots, spells, adventure, and (you guys!) MAGIC.