“The Price of Glee” premieres January 16 at 9 p.m. ET on ID (which is airing all three parts that night) and Discovery+. Like CNN, Discovery is a unit of Warner Bros. Discovery.

Melissa Benoist, who joined "Glee" in Season 4 as wallflower Marley Rose, opened up in 2019 about being the victim of domestic violence while married to Blake Jenner, another former star in the show.

“The Price of Glee” holds together for a time, recounting how the show burst onto the scene with its fresh-faced performers as well as the demands associated with that sudden fame. To compound ...