A photograph of a man with long brown hair and a short brown beard wearing a gray sweater.
A photo of Benjamin Foster as seen in "Worst Ex Ever."
  • Netflix's "Worst Ex Ever" focuses on four different cases of domestic violence and abuse.
  • The first episode revolves around Benjamin Foster, who held his ex-girlfriend hostage for three days.
  • Here's what happened to him.

The first episode of Netflix's new true-crime docuseries, "Worst Ex Ever," details the case of violent criminal Benjamin Foster, who held his ex-girlfriend hostage for three days.

Netflix is a leading producer of true crime documentaries, often focusing on grisly murders or bizarre crimes.