Netflix struggles to retain viewers after a series' first season

Netflix may be the undisputed king of streaming, but it's facing a new challenge: "the sophomore slump." Internal data reported by Bloomberg show audiences dropping off dramatically for follow-up seasons of successful shows.

Series like "The Night Agent," "Beef" and "Avatar: The last Airbender" all lost 50% or more of their original viewers when they returned for season two. To figure out what might be going on and how Netflix could respond we called up Brandon Katz, director of insights and content strategy at Greenlight Analytics.