Triple Threat by A.J. Downey

Kyle Lachlan is a sophisticated and deadly hitman, one of the best. Conan Roan is his coordinator, a scarred British veteran. After years of working together, they encounter something that turns their world upside down, and her name is Sadie.

Somewhere between and rescue and a captive Sadie Brooks was a homeless sliver of a girl living near rock bottom. Now she is caught between an unexpected person from her own past and feelings she never expected. Can she deal with the sharp and harrowing Lachlan, or the bearish Roan?

She is introduced to the hedonistic lifestyle of professional killers, the opulence, the glamour, and the violence. As she is swept up from the street into the whirlwind of danger, guns, and sex comes with the business, can she survive?
A lamb amidst the wolves?