Mary Nichols, a beautiful young FBI agent, begins to have flashbacks to an event from her childhood. The flashbacks intensify after visiting her uncle's newly purchased home, the site of a murder 25 years ago. Privately, she begins to investigate. The local priest, Father Leo, becomes her primary suspect. Her flashbacks continue, each one bringing her closer to the killer's identity. But, all the while, unknown to Mary, the prominent psychiatrist from whom she's sought help, has been seeing many of the community's prominent members as patients, including Father Leo. Treachery, deceit and the pain of memories suppressed by sheer will drive this tumultuous murder mystery. Who's the guilty one? The banks of the famous Charles River holds the answer. But will Mary find it before he finds her?