Simply Lies (Broché)

No truth. Former Jersey City detective and single mother-of-two Mickey Gibson now works for global investigation company ProEye. One day, she gets a call from a colleague. Arlene Robinson, asking her to visit the home of a notorious arms dealer. No limits. Mickey arrives to discover a body hidden in a secret room. The arms dealer does not exist - and nobody at ProEye knows of Arlene Robinson. The body is that of Harry Langhorne.
who'd been in Witness Protection due to his links with the mob ; Mickey has been tricked. No Fear. So begins a cat-and-mouse showdown between Mickey and a woman with no name. She intends to get what she wants, and people who get in her way will die. For Mickey to stop her, she must first discover her true identity - and the reason why she selected Mickey as her nemesis ... Killer twists. Heros to believe in.
Trust baldacci.