City of Scoundrels (Counterfeit Lady #3)
Victoria Thompson

When Tom is later reported killed, Elizabeth and Gideon learn that the new will has gone missing after Tom's bride revealed her identity to his family. Unless the new will is found and validated, the original will, which leaves everything to Tom's brother, will prevail and the wife and child will get nothing. If Tom's new bride survives, that is. Some terrible threats have been leveled against her, and Elizabeth and Gideon must figure out a way, legal or not quite, to secure Tom's fortune for his wife and child while saving her life in the process.