After the mysterious murder of someone dear to her, Treasury Agent Marybeth Medina turns to Christian Wolff for help in uncovering the truth. Enlisting the aid of his estranged but deadly skilled brother, Brax, Chris uses his razor-sharp intellect and unconventional methods to unravel the case. However, as they edge closer to solving the puzzle, their investigation attracts the attention of some of the world's most dangerous killers—each determined to end their pursuit.