Bates Motel is a prequel version of Psycho set in modern times. What makes this show so successful is it's ability to tell a dark story well. Watching as main character Norman begins to unwind and his mother Norma protects is riveting.
Very chilling psychological drama. It gives a great insight into how someone can have multiple personalities and not even know about it. The fact that it is based on a real story just makes it all the more intriguing.