A female jogger is found dead in Schuylkill River and Megan teams up with medical investigator Peter Dunlop to investigate her whereabouts before her murder. Meanwhile, Megan spends the day trying to solve a personal problem concerning her daughter's birthday.

Megan is surprised to discover she has a connection to a woman found dead in a hotel room; Megan starts taking an interest in what is going on around her.

A magazine editor is found dead in her mansion; Megan confronts a suspect while at a social event with her mother; Ethan surprises Kate with his positive attitude.

Megan and the team investigate when a Philadelphia homicide detective is killed in a hit-and-run; Megan turns to her mother (Joanna Cassidy) for help.

After Peter rescues a woman from a house fire, Megan discovers another person in the house who died. Peter takes the discovery personally since he had no idea anyone else was in the house. A veteran arson investigator challenges Megan at each step in her investigation. When Megan complains to Kate the response she gets only intensifies the tension between the two women.

A champion equestrian is killed and potential drug use is suspected, but when Megan's daughter, who also rides, overhears details of the case, she leads the team to a clue and possibly the murderer.

When a popular 17-year-old high school student is found dead after a rave, the team must decipher various unknown drugs in his system and multiple bruises to figure out the cause of death. Meanwhile, Meghan is finally starting to date again after the divorce, but her ex-husband springs some shocking news on her and her daughter, causing tension at home.