Flight of a swift

Fen is a teen doing okay until their best friend doesn't meet them at the school gate one day. A few hours later, she is declared a missing person. Dozens of people vanish in a wave of grief and paranoia; nobody knows who's being taken next and families are terrified. Heartbroken, Fen decides to start searching for her and the other missing people, following each tiny clue. They soon become entangled in a deadly web of secrets, lies and spilled blood. Will they get free in time, or die trying?

FYI, I do not own the cover art. I found it on yt and idk who made it. If you know, pls tell me who made it.
Ty if u read this <3