Now that Zankou has stolen the Book of Shadows, he learns he has to steal the powers from the sisters in order to be able to access all the spells and powers inside. Realizing what he has done, Piper, Phoebe, and Paige set out for one final showdown with the demon where their lives are at stake. Things get trickier for them when Inspector Sheridan leads a team of police officers to the manor, looking to take the sisters in for questioning.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
With the Book of Shadows finally in his possession, Zankou plans to open the Spiritual Nexus and take in the power of the Shadow. To divert Zankou's attention away from the Nexus, Piper, Phoebe and Paige successfully goad him into coming after them instead. The sisters come to the realization that the only way to stop Zankou may be to sacrifice themselves, but they manage to survive and escape with Leo in an attempt to get their lives back.