The Unrepentant - Grace McGinty

Estrella had a hero complex. Her twin sister, Hope, had teased her about it for as long as she could remember. She’d always been ready to go to battle for the underdog. She loved her job at the Boston P.D., loved that she could make a difference to people’s lives. 

But when Hope is abducted outside a conference in Geneva, Estrella’s carefully ordered world takes a sharp left turn into darkness. Vowing revenge on the human traffickers that abducted Hope, she begins her hunt for justice.

Throw in her best friend,  two wildly inappropriate gifts from her pseudo-parent Lucifer, and a sexy mercenary from her past, and she has everything she needs to break the people who broke Hope. Blood will spill and her inner darkness will rise, but Estrella doesn’t care. She may have a savior complex, but what people didn’t seem to realize was she had never been the good twin.

The Unrepentant is Book Two in the Hell’s Redemption Series.