Lilly reopens a 1990 homicide, in which a church organist was found stabbed to death in his van surrounded by pornography and drugs in a seedy part of town, after the man's Alzheimer's-afflicted widow begins to have flashbacks about the night of the crime.

Lilly gets a cocky new partner, Scotty Valens, just as she reopens a 1981 homicide involving a 16-year-old female track star who was fatally shot. The investigation is renewed after a felon, who is trying to get a reduced sentence, tells officers he saw a student washing blood out of a car the night of the murder.