Lilly tries to solve a 2001 case in which a woman and her 6-year-old daughter mysteriously fell from an apartment window. The girl died, and the mother survived but lapsed into a coma. When the woman suddenly wakes up, she remembers little of that night except that someone was out to hurt them.

Lilly reopens the 1997 murder of a 20-year-old college student who, while hitchhiking home after a big gambling win in Atlantic City, was taken into a wooded area and shot to death. The case is reinvestigated when a similar homicide takes place in Delaware and matches another one in New Jersey, prompting police to believe that a serial killer may be responsible.