The Drafter by Kim Harrison

With a brilliant, punchy premise and plenty of action,The Drafter is a thriller with a sci-fi edge that will push buttons for both newcomers and fans of Harrison’s Rachel Morgan urban fantasy series. Peri is a Drafter, someone with the ability to rewind time 30 seconds and change the past. But every time she Drafts, her own memories are muddled—a confusion Jack, her lover and partner at Opti, the secret government agency they are both a part of, helps her muddle through. When Peri discovers her own name on a list of corrupt Opti employees, she suddenly has reason to doubt Jack—and herself, as she realizes her entire existence has been manipulated.