A Gathering of Shadows by: V.E. Schwab (Book 2)

Four Londons. One magical tournament. An unstoppable darkness.
Lila Bard is determined to prove herself on the high seas, but when she crosses paths again with Kell—one of the last magicians who can travel between parallel Londons—their fates become dangerously entwined. As Red London hosts the dazzling Element Games, a competition of the world’s most powerful magicians, old rivalries ignite and new dangers rise from the shadows.

V.E. Schwab’s spellbinding second installment delivers heart-pounding action, unforgettable characters, and a richly imagined world where magic is as dangerous as it is beautiful.