<P> `` The Yoko Factor '' is the 20th episode of season 4 of the television show Buffy the Vampire Slayer . </P>
<P> `` The Yoko Factor '' is the 20th episode of season 4 of the television show Buffy the Vampire Slayer . </P>
buffy the vampire slayer season 4 episode 20
buffy the vampire slayer season 4 episode 20
The Yoko Factor
The Yoko Factor