This vow has kept P.I. Sadie Lane safe ever since she saw her parents murdered and then entered Witness Protection. But when she gets a lead on the long-ago killer she can't forget, Sadie joins forces with a dashing FBI agent leading his own investigation into the crime boss. Kip Moore makes her yearn to trust, but protocol demands Sadie keep her true identity hidden. Secrecy is all that has kept her alive. As they venture deep undercover into her target's syndicate, Sadie finds herself in over her head. Kip is her only hope as she comes face-to-face with a killer from her past. A deadly past that now threatens her future…and Kip's.