Destined Radiance by Tessa Cole

The darkness could devour her light… but it’s a sacrifice she’ll make to save her men.
My whole life has been turned upside down and set on fire, but now I’m Agent Essie Shaw, full-fledged JP team member. I walk hand-in-hand with Gideon, crave all of Marcus’s ferocious passion, yearn for Jacob’s intense stillness — and ache for Kol, whose soul is torn so deep he’s thinking of doing the unthinkable. Leaving the team.
The timing couldn’t be worse for me, my guys, and the dangerous task that still lies ahead of us. The fight we almost lost with those three near-unstoppable glyph witches only scratched the surface. Their source is an evil so powerful, it will restart Michael’s war against humanity.
I’ll do anything, even risk letting darkness devour my soul, to pinpoint that source and prevent another war. Because I’m done running, done hiding. The future of all mankind is at stake, and the JP team — all of us, together — isn’t going down without a fight.