Charmed

Season 3, Episode 5

Episode Title: Sight Unseen

Air Date: 2000-11-02

Overview:

Prue becomes increasingly paranoid over attacks from the Triad, and the mysterious threat Belthazor poses. After the house is robbed, Prue is convinced the Triad is launching an attack, when the real culprit is more mortal than all three sisters realise.