Gaslight by Dannika Dark

Vampire trafficking is a sinister business, and nobody knows that better than Keystone. After Raven discovers hidden clues in a cold case, the group sets a trap in hopes of catching an elusive criminal. But when the plan backfires, Raven’s world is thrown into chaos, and Christian’s loyalty is put to the ultimate test.

Buried secrets come to light, and the only thing keeping Raven grounded is her insatiable thirst for vengeance. The stakes are high as they travel to a place where the landscapes are as treacherous as the immortals who live there. This time, there’s no room for mistakes. Will Raven have the courage to tame the violence in her heart before it swallows her whole?