Sixteen Souls by Rosie Talbot

The spooky, swoony YA debut from BookTok star @Merrowchild!

Someone is stripping Europe's most haunted city of its spirits. When self-destructive, 16-year-old seer, Charlie Frith, realises that one of his own ghostly friends has gone missing, he must put aside his own safety - and reclusive existence - if he is to find them. Charlie reluctantly teams up with Sam Harrow - the new seer in town - and a rag-tag group of ghosts, to save their friends from a fate literally worse than death.

But there is a dark purpose behind these disappearances - more sinister than Charlie could ever have imagined. And, as he slowly comes to terms with his romantic feelings for Sam, the stakes become even higher as time quickly runs out!