De tre systrarna Halliwell, ättlingar till goda kvinnliga häxor, kämpar mot onda krafter med hjälp av sin kombinerade häxkraft som kallas "The Power of Three".
While taking a tour of Alcatraz, Phoebe sees the ghost of a killer take possession of a guard's body so he can cross the waters surrounding the prison, and must stop him before it's too late.
S1A20 44 min
