It is the rainiest year in memory when a homeless man, and a filmmaker are found murdered on the banks of the Snoqualmie River. Mental Health Evaluator, Grace Vaccaro, determines when a person is a danger to self or others and needs hospitalization. She just assessed the first man and let him go. Now he is dead. The filmmaker is her neighbor. Are the deaths related?

Grace's search for answers leads her from a Seattle homeless encampment to a pristine forest about to be lost to mining. A Native American elder conceals the location of ancestral gravesites where bones and artifacts were disturbed. And a pregnant woman Grace just evaluated is terrified. Are her statements delusional or does she have information leading to the murderer?

As Grace comes closer to the truth, her quiet home is invaded, and she is the next target. She must face the killer alone and learn how far she will go to protect herself and others.