When an unexpected reunion turns treacherous, the target is a mystery…but the hunt is on for the perpetrator—and time is running out.

After an accidental shooting during a tense standoff, FBI Hostage Rescue Team member Mark Sanders is sent to St. Louis to work as a field agent and get his bearings while the bad press subsides. Just weeks away from returning to Quantico, Mark has a chance encounter with his first love, psychologist Emily Lawson. But their reunion is cut short by a sniper.

Now Mark must find the shooter before he strikes again. But what is the man’s motive—and who was his intended target? Can Mark put the pieces together, keep Emily safe, and rekindle a relationship at the same time?