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?