Episode 129 of "Charmed"
s06e18 Spin City
Title: Spin City
Original Air Date: 04/18/2004 on WB
Director: Mel Damski
Writer: Doug E. Jones, Andy Reaser
Guest Stars: Christopher Neiman (Sigmund), Billy Beck), Scout Taylor-Compton (Fairy), Matthew McGrory (Ogre), Scott Adsit), Jodi Lyn O'Keefe (Spider Demon), Hamilton von Watts), Andy Stochansky (Himself), Danielle Andrew (Old Woman Fairy), Sonje Fortas (Ugly Witch), Katie Evenard (Wood Nymph), David Joseph Steinberg (Leprechaun Riley), Nathaniel Lamar (Jeremy), Jeff Asch (Wrong Guy), Sonje Fortag (Ugly Witch)
Plot Outline:
When Piper is kidnapped and cocooned by the Spider Demon, and becomes Chris infected with the Demon's venom, causing him to mutate into a spider, Paige, Phoebe and Leo try to rescue them. Meanwhile, Leo finally learns why Chris resents him.