The Allentown native plays a Philadelphia police officer in the Kensington-set show based on Liz Moore's book.

"We can see ourselves in each of these people, and that's the point of storytelling,” Seyfried tells PEOPLE of the show, now streaming on Peacock

"Long Bright River" co-creators Liz Moore and Nikki Toscano on the biggest changes from the book, Amanda Seyfried's prep and a possible Season 2.

The actress’s role as a Philadelphia beat cop in this Peacock series seems like an odd fit, but that’s the point. “I just wanted to prove to myself that nothing can feel too foreign,” she said.

The eight-episode adaptation of Liz Moore's novel tells a story of sisterhood, addiction and murder set in the Kensington neighborhood of Philadelphia.

For Amanda Seyfried, the Peacock limited series offered a rare opportunity to play a character adapted from a book while working closely alongside the author, Liz Moore.

The “Long Bright River” series premiere drops Thursday, March 13. Stream the entire season today on Peacock.

Long Bright River is a new Peacock TV show, which is an adaptation of the 2020 book of the same name by Liz Moore. The show is not based on a true story but takes inspiration from the author's life.

Amanda Seyfried dishes on her new Peacock limited series "Long Bright River" and fulfilling her dream of playing a police officer, including a traffic stop turned sideways during a ride-along with a real cop.