The Day I Died by Lori Rader-Day. "A propulsive psychological thriller about Anna Winger, a handwriting analyst who occasionally does work for the FBI. Her ordinary professional detachment falters when she is is brought in to help analyze a ransom note left at a murder scene in her town. This particular case cuts very close, forcing single mother Anna to confont ghosts from her own past, and threatening the life she's tried to build with her 13-year-old son."