As Piper prepares to go on a business trip to Hawaii, she worries about how Prue and Phoebe will handle any magical crisis that might come up while she's gone. Meanwhile, Phoebe goes on a sight-seeing trip to Alcatraz, where she comes across a spirit. It takes possession of a security guard, in order to make his way across the water and seek revenge on the people who were behind his conviction. As a result, Phoebe and Prue have to find a way to banish the spirit before it's too late.
Spoilers ahead. Coverage follows the scope labeled below.
Complete story — includes the ending
The evil spirit of a serial killer, Jackson Ward ( Jeff Kober ) escapes from Alcatraz Island seeking revenge on his judge and jury. Phoebe and Prue must figure out how to vanquish this evil spirit and stop him from killing again without Piper, who is in Hawaii. Eventually, Prue drinks a concoction that temporarily stops her heart and vanquishes the spirit with a spell that can only be cast on the astral plane by a ghost before Andy revives her.