Blood Sacrifice (Faith of the Fallen Book 2)

Alexi Creed’s best friend is dying.
After a lengthy search, they discover that nothing on Earth will cure Savanna. With the help of a mysterious antique dealer, Alexi and Savanna must travel beyond the Earth into the realm of the dangerous and volatile Fae. With Savanna's life and the fate of the world on the line, Alexi and Savanna must find the ancient source of all magic, before time runs out for them both.