(NewsNation) — A new episode of a docuseries shedding a disturbing light on what went on behind the scenes of some of the most popular shows on Nickelodeon in the 1990s and 2000s will be released next month.

The fifth episode of the docuseries “Quiet on Set: The Dark Side of Kids TV” is set to premiere April 7 on Investigation Discovery, according to Variety Magazine. Journalist Soledad O’Brien will moderate the episode, building “off the revelations explored in the first four episodes,” Forbes reports.

The first four episodes, which premiered on Investigation Discovery and Max earlier this month, exposed the toxic culture at popular shows including “All That,” “The Amanda Show” and “Drake & Josh,” and the alleged abuse some child actors experienced while filming.

The new episode will feature discussions with former stars about “where the industry can go from here,” Forbes reports. Additionally, the episode will feature a discussion with actor Drake Bell, who accused Nickelodeon dialogue coach Brian Peck of repeatedly sexually abusing him.

In 2004, Peck was convicted of sexually assaulting a child actor who was not named until now.

His parents apparently let him go to Peck’s house anytime he needed to work on dialogue or sleep over there if need be for an audition.

Peck registered as a sex offender, as did former Nickelodeon production assistant Jason Handy, who was convicted of lewd acts on a child and distributing sexually explicit material by email.

The first four parts of the series also focused on producer Dan Schneider, the man behind some of the biggest children’s shows of that time but was alleged to have created an environment that made a lot of people uncomfortable.

There were accusations of creating a toxic workplace, inappropriate behavior and over-sexualizing young stars, including Ariana Grande and Jamie Lynn Spears.

Schneider addressed the allegations from the docuseries and apologized.

NewsNation’s Tom Palmer contributed to this report.