Vampire Plant

Just found out I have a never-before-discovered Vampire Plant. It's actually a philodendron with vampire tendencies. Ever since I took it out of the dark, dry corner it's been living in, and put it on a sunny windowsill, it's been in a silent scream state with it's leaves reaching for the shadows.
I'm not sure what I should do with it. Should I put it back in it's coffin-like, dark corner, or should I torture it with water and sunlight? I could put it out of its misery, but I don't remember if I should shoot it with a silver bullet, drive a wooden stake through it's heart, or have an exorcism performed??