BritBox is adding a new limited series to its programming. The Confessions of Frannie Langton is a “powerful period drama with a murder mystery and a tale of forbidden love at its core.”

The series will premiere exclusively on BritBox in North America, Australia, South Africa, and the Nordics on Wednesday, March 8th, with all four episodes readily available to stream.

Here's an official description:

Adapted from the Costa Book award-winning novel of the same name by the author herself, Sara Collins, and set against the dazzling opulence of Georgian London, ‘The Confessions of Frannie Langton’ narrates Frannie’s journey from a Jamaican plantation to the grand Mayfair mansion of celebrated scientist George Benham and his exquisitely beautiful wife: Madame Marguerite Benham. In a misguided and monstrous gesture, Frannie is gifted to Benham by the man who owns her, John Langton, and she is employed as a maid in the household, much to her chagrin.

As the plot twists and turns, events take a fateful turn as the Benhams are found murdered in their beds, with Frannie lying next to Marguerite. Frannie is accused of murder but swears that she couldn’t possibly have killed her mistress because she was devoted to her. Dragged away to prison, Frannie attempts to piece together the events of that night. She is deep into a laudanum addiction and unclear about precisely what happened.

Written and executive-produced by the novel’s author Sara Collins, 'The Confessions of Frannie Langton' stars:

Karla-Simone Spence (Blue Story, BBC’s Wannabe) as Frannie Langton, “the drama’s young protagonist born into a life of slavery who is fighting to tell her own story.”

Spence is joined by Sophie Cookson (The Trial of Christine Keeler, Kingsman: The Secret Service) as Madame Marguerite Benham, Patrick Martins (Redemption, Blasts From The Past) as Olaudah “Laddie” Cambridge, and Stephen Campbell Moore (War Of The Worlds, The One) as George Benham.

Watch an exclusive clip of the limited series below: