Past Sins by Debra Webb

To get a shot at a future, Olivia will have to face the bullets she's already fired in Debra Webb's classic Sins of the Past.

Dr Olivia Mills has a past...one she faked her own death to escape. But one phone call destroys her carefully planned new life. See, Olivia isn't Olivia at all – she is Vanessa Clark, former black ops assassin. And she's been ordered to kill someone she loves.

When her old flame and ex-partner Holt Landry shows up, things get even more complicated. Once, he'd betrayed her. Now he asks for her trust. The more Olivia uncovers, the more she realizes the past is not what it seems. And if she doesn't go back, this time she'll die for real.

Originally published in 2006.