The murder of a man in his driveway is linked to an unsolved 1992 murder of a Democratic campaign worker whose body was thrown into a river on election night.
Information provided by a dead stockbroker's former protégé convinces Lily there was more to the dead man's fatal accident in 1985 than originally thought.
Lilly and her team investigate a military academy after receiving an anonymous letter claiming a highly-respected swim coach death was a premeditated murder.
The stress caused by her sister's disappearance leads Billie to accidentally transform her parents into cold-blooded assassins in the service of a demon.
While romantic issues plague Paige and Piper, Billie rescues her sister from demons and works with Phoebe to help her cope with her traumatic experiences.
While Piper plans an engagement party for Paige and Henry, Phoebe meets Cupid, and Christy is captured by demons who plot to take control of the Underworld.
While Paige and Henry head off on their honeymoon, Cupid tries to reignite Phoebe's passions and Piper takes in a group of refugees from a magic school.
Coop tries to help Phoebe in her search for true love, and Piper tracks down the demons that killed Billie's parents in her search for the Ultimate Power.
In the 1980s, a down-on-his-luck wedding singer who is left at the altar on his wedding day falls in love with a waitress who is engaged to a wealthy jerk.
Lilly is forced to re-investigate her first case in which a man was convicted of a brutal triple homicide when the case is overturned due to new evidence.
Lilly tackles the daunting task of solving the 13-year-old murder of two illegal immigrants who altered their identities in order to evade deportation.