Scott D. Pierce: There’s a ghost on ‘Nancy Drew,’ and it scares me

Nancy Drew is back, and she brought a ghost with her. A real ghost. A scary ghost.The new “Nancy Drew” (8 p.m. Wednesday, Ch. 30) is filled with attractive young people — it’s on The CW, so you had to figure that would be the case. There’s murder. Romance. Mystery. Angst. And a ghost.Not like in an episode of “Scooby-Doo.” There’s no logical explanation at the end of the episode. Nobody is wearing a mask to, like, scare people as part of a plan to