Darkfever by Karen Marie Moning — book slip

MacKayla Lane's life is turned upside down when her sister is murdered, leaving behind a cryptic message. Determined to find answers, Mac travels to Ireland, where she discovers a hidden world of Fae and dangerous magic.

As she navigates this shadowy realm, she must learn to harness her newfound powers, all while being pursued by the enigmatic Jericho Barrons and the seductive Fae prince, Vlane.

With the fate of both worlds hanging in the balance, Mac's quest becomes a race to find the Sinsar Dubh, a powerful dark book that could control everything.

First in the Fever series.