Some people say it takes them at least three episodes to make a judgment call about a show and whether it’s worth continuing to watch. Others decide by the end of the first episode. That doesn’t give a series a fair shake, though, because a slow build to a crescendo can really help create a compelling story. Whether shocking or subtle, however, some shows manage to hook viewers within the first 120 seconds, so there’s no question that it’s a show worth watching.