FBI Special Agent Dylan McKenzie is a woman with a mission - locate Steven Horton, the witness who could single-handedly bring down the Giametta Crime Family. With Horton hiding from both the mob and the FBI, Dylan and her team are assigned the task of keeping tabs on Horton's ex-wife after mounting evidence leads them to believe he will run to her. Keeping Lia Broderick under surveillance should have been just another day on the job for Dylan. But, when Lia becomes the victim in a bank robbery gone terribly wrong, Dylan has no choice but to break cover in order to step in and save her. Despite her best efforts to maintain a professional distance from the attractive accountant, Dylan finds herself being reeled deeper and deeper into Lia's life. As the investigation heats up, it becomes clear that Lia is the key to finding the evidence that the mob is willing to kill to get their hands on. When Dylan is betrayed by a rogue agent, she suddenly finds herself on the run with Lia, uncertain who she can trust. And as the mob closes in, Dylan realizes that the greatest risk is the one she's taking with her heart.