When a superpowered assassin attempts to kill the governor of Louisiana, there's only one person who can stop it: Sienna Nealon. But no sooner is she on the case than Sienna finds herself embroiled in a murky web of political entanglements, corruption, and stuck with a mystery that makes no sense. With time running out, can Sienna find her way to the bottom of an old mystery before the assassin strikes again?

Following an explosive incident in New York City, Sienna Nealon is sent to Nashville, Tennessee, where a man with a strange voice power is wreaking havoc.

After a forced job transfer, a kidnapping incident in Northern Virginia sends FBI Agent Sienna Nealon along a dark path, trying to unravel the mystery. But kidnapping gives way to murder, and soon Sienna is racing against time, fighting against diplomats and Washington DC bureaucrats, trying to stop a power that may finally outmatch her own.

Revelen – A mysterious Eastern European country, shrouded in mountain peaks and ruled by a tyrant so forbidding that his legend formed the basis for Dracula. For years, Revelen has interfered in the outside world, causing chaos and sending all manner of trouble Sienna Nealon's direction. Now, at last...she finds herself in the heart of Revelen, and face to face with this greatest of threats. But all is not as it seems, and soon Sienna is embroiled in yet another mystery that will push her to her limits, and one which will make her question who she is and what she stands for in a way that ...

“Hey, could you have your sister...call me?” Sienna Nealon has been on the run for almost two years, a fugitive for crimes she didn't commit. When her brother tells her that Angel Gutierrez, an employee of his agency, wants to talk to her, that should be the first tipoff that something is really wrong... Soon Sienna finds herself paired up with Angel and deep in a mystery. Angel's cousin Miranda has gone missing, and following the clues leads the two of them into a clash with a Mexican drug cartel's assassins. Car chases, secrets hidden in bank vaults, and a brewing confrontation with ...