The new lifetime series “You” is an elegant stalker thriller. Greg Berlanti expertly created, produced and wrote the pilot. The man behind Dawson’s Creek, Everwood and Brothers and Sisters knows what works. Joe (Penn Badgley) turns on the charm as a social media Peeping Tom. He tracks Beck (Elizabeth Lail) so smoothly, you might forget how creepy he is. Don’t worry, by the end of the pilot you’ll have other concerns. This perfectly entertaining series is a delightful character driven scare fest.