Grace Marks has been convicted for her involvement in the vicious murders of her employer, Thomas Kinnear, and Nancy Montgomery, his housekeeper and mistress. Some believe Grace is innocent; others think her evil or insane. Now serving a life sentence, Grace claims to have no memory of the murders.Dr. Simon Jordan, an up-and-coming expert in the burgeoning field of mental illness, is engaged by a group of reformers and spiritualists who seek a pardon for Grace.