Sight Unseen

After coming back from the past, after the manor is burglarized, and Prue's personal items start disappearing, Prue becomes obsessed with learning more about the reclusive evil force, The Triad, that is systematically hunting the Charmed Ones, while Piper and Phoebe believe its just been coincidences and the work of an over active imagination. Meanwhile, Cole discovers that the demon Troxa is stalking the Halliwell sisters, but unknown to all, he isn't the only one doing the stalking. Phoebe and Darryl try to point out to the fact that the killer is more likely to be human than demonic. Meanwhile, Piper can't "concentrate" whenever she's around Leo, because she fears that the Elders are always watching them. Phoebe and Cole's first kiss.